A thread is wound 200 times round a reel of diameter 5 cm. Use the value 3 for it to find the approximate length of the thread in metres.

 A Thread Is Wound 200 Times Round A Reel Of Diameter 5 Cm. Use The Value 3 For It To Find The Approximate

Answers

Answer 1

Answer:

Length of the thread = 30 metres

Step-by-step explanation:

Length of the thread in one round of a reel = Circumference of the reel

                                                                    C = [tex]2\pi r[/tex]

Since radius of the reel = [tex]\frac{\text{Diameter}}{2}[/tex]

                                       = [tex]\frac{5}{2}[/tex]

                                       = 2.5 cm

Circumference of the reel = 2(π)(2.5)

                                           = 5π

                                           = 5×3

                                           = 15 cm

Length of the thread wound in one round around the reel = 15 cm

Since, thread is wound 200 times round a reel, length of the thread

= 200 × 15                                                      

= 3000 cm

30 metres

Therefore, Option (B) will be the answer.


Related Questions

Plz help fast only given 5 mins tell if they are similar or not

Answers

Answer:

They are not similar.

Step-by-step explanation:

QP would be equal to FP if they were equal but they aren't equal so....yeah

The coordinates of the midpoint of GH¯¯¯¯¯¯¯¯are M(−132,−6) and the coordinates of one endpoint are G(−4, 1).

Answers

Answer: (-260, -13)

Step-by-step explanation:

To find the midpoint  of  a line we find the average of x coordinates and the average of the y coordinates.So since two  of the endpoint is already given we could find the midpoint  by setting and equation up.

[tex]\frac{-x+(-4)}{2} = -132 x= -260[/tex]  

The same way for the  y coordinates

[tex]\frac{y+(1)}{2} = -6[/tex]     y = -13

C is the midpoint of BD . If CD = 2x and BD = 3x + 5, what is CD?

Answers

2x+2x=3x+5
4x=3x+5
x=5
CD = 5

Because C is the midpoint, CD would be half of BD. To find the full length of the segment BD you have to add the length of Cb and CD. Since CD is half you just double it. CB is the same length as CD. Because CB and CD together are the same as BD you make 2x+2x equal BD which is 3x+5. Once you have the equation you solve for x by adding 2x and 2x to get 4x. Then you subtract 3x from both sides to get x=5.

What type of answer would you expect from the problem below? Explain why you expect that type of answer.

Answers

Answer:option 1

Step-by-step explanation:

Answer:

first one

Step-by-step explanation:

You have $138 in a savings account and save $12 per week. Your friend has $98 in a savings account and saves $17 per week. How many weeks will it take for you and your friend to have the same balance?​

Answers

Solution

Provided :-

• I have $138

• I save $12 per week

• Friend have $ 98

• He saves $17 per week

Let the number of weeks required to have same balance be x

→ 138 + 12x = 98 + 17x

→ 138 - 98 = 17x - 12x

→ 40 = 5x

→ x = 8

So we need 8 weeks

Answer: 8 weeks

Step-by-step explanation:

Let x = the number of weeks

138+12x=98+17x

 40+12x=17x

        40=5x

          x=8

Hope this helps!! :)

Please let me know if you have any question

A map is created of Maricopa County with a scale factor of 1 inch = 2.5 miles. The distance between Phoenix and Fountain Hills is 2.92 inches on the map. Determine the actual distance between the two cities.

Answers

Answer:

The actual distance between Phoenix and Fountain Hills is 7.3 miles

Step-by-step explanation:

We note that the scale factor gives the ratio of the map reading to the actual distance reading

The scale factor of the map is 1 inch = 2.5 miles

The distance between Phoenix and Fountain Hills = 2.92 inches on the map

Let the actual distance between Phoenix and Fountain Hills = D, we have;

D/(2.92 inches) = 2.5 miles/inch

Therefore;

D = 2.92 inches ×  2.5 miles/inch = 7.3 miles

D = 7.3 miles

The actual distance between Phoenix and Fountain Hills = D = 7.3 miles.

You are planning to plant a triangular garden in your backyard, as shown. You plan to put up a fence around the garden to keep out animals. Find the length of fencing you need to the nearest meter.

Answers

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete has the figure of the triangle is not given.

However, the following steps will guide you.

To solve this question;

you need the lengths of the threes sides of the triangular fields

Represent these lengths with a, b and c

Next;

Sum these lengths together;

This gives the required length of fencing

[tex]Length = a + b + c[/tex]

Take for instance;

[tex]a =4;\ b = 3;\ c = 5[/tex]

The required length of fence would be

[tex]Length = 4 + 3 + 5[/tex]

[tex]Length = 12\ units[/tex]

Apply these steps and you'll get your answer

Sarah is driving her car down George Street to meet her friend at a cafe. What is the angle of the turn she needs to make on to Green Street to get to the cafe?​

Answers

Answer:

100 degrees

Step-by-step explanation:

George Street I assume is the one with the red line.

So she has to turn 40 + 60 = 100 degrees to go to Green Street

I
5. A shirt that you want to buy costs
$15.50. You can use a $5 discount
coupon if you spend at least $20.
Write and solve an inequality that
represents how much more you
must spend to use the $5 coupon.

Answers

The answer is 30 like if u got the right answer

Please help solve! I tried but I’m messing this up, would really appreciate it!

Answers

Answer:

K = [tex]\frac{4r}{n} -a[/tex] n [tex]\neq 0[/tex]

Step-by-step explanation:

We have our equation [tex]r = \frac{n}{4} (a+K)[/tex] and are looking for K

First we have to switch sides :

[tex]\frac{n}{4} (a+K) = r[/tex]

Since we have a denominator of 4, we multiply both sides by 4 :

[tex]n (a+K) = 4r[/tex]

We then divide both sides by n :

[tex]a+K = \frac{4r}{n} ; n\neq 0[/tex]

Subtract a from both sides :

[tex]K = \frac{4r}{n} -a; n\neq 0[/tex]

^^^

What is 3 + (-9) in integers

Answers

Answer:

- 6

Step-by-step explanation:

3 - 9 = -6

Answer:

-6

Step-by-step explanation:

[tex]3 + (-9) \\\\\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a\\=3-9\\\\\mathrm{Subtract\:the\:numbers:}\:3-9\\=-6\\[/tex]

Shay makes 24 liters of homemade vegetable stock. She distributes the stock equally into 8 containers to give to friends and family. How much vegetable stock is in each container?

Answers

Answer:

3 liters

Step-by-step explanation:

24/8 = 3

Answer:

Step-by-step explanation:

what are you so most to do on this answer

Examples: Name the sets of numbers to which each number belongs.​

Answers

Answer:
a) Integers, real, rational, whole
b) irrational real
c) rational real

explanation:
A square root with a non repeating decimal is irrational.
All numbers are real numbers.
A terminated fraction or decimal is rational.
Whole numbers are not fractions or decimals.
Integers can go on a number line.

Pls help ASAP I will give Brainlyist

Answers

Answer:

A

Step-by-step explanation:

I hope this helps you

Can anyone help?i been going at this for a while and i still cant figure it out, i dont really understand how to even get the answer id appreciate some help :D

Answers

Answer:

A) 44.26

B) 9.43

C) (2.5,3.5)

D) OH

E) 26.26

Step-by-step explanation:

Let’s figure out the lengths first.  Three are straight line, so are easy:

HE=9, SE=11, SU=9

The other two, you need to use the distance formula or Pythagorean Theorem. OH=8²+5²=c² = 64+25=c² = 89=c² = √89 = 9.43

OU=3²+5²=c² = 9+25=c² = 34=c² = √34 = 5.83

Now we can start answering the questions.

A) 9+11+9+9.43+5.83=44.26

B) 9.43

C) You already have: (2.5,3.5)

D) OH=9.43.  EH=9.  OH is longer.

E) HU is 11. OH is 9.43.  OU is 5.83.  11+9.43+5.83=26.26

Tanya walked for 17 minutes from her home to a friend that lives 1.5 kilometers away. D(t) models Tanyas remaining distance to walk in kilometers, T minutes since she left home. what number type is more appropriate for the domain

Answers

Answer:

Real numbers

0≤ t ≤17

Step-by-step explanation:

Answer:

Real numbers

0≤ t ≤17

Step-by-step explanation:

3.48 gallons of milk is sold for $10.16. If you want to buy 10.83 gallons of milk, how
much will you have to pay?

Answers

Answer:

  $31.62

Step-by-step explanation:

Assuming the price is proportional to the volume, your price will be ...

  price/(10.83 gal) = ($10.16)/(3.48 gal)

  price = $10.16(10.83/3.48) ≈ $31.62

You will have to pay $31.62.

what is 67 divided by 4.7? round to the nearest hundredth. ​

Answers

Answer:

14.26

Step-by-step explanation:

brainliest plz

Connor is driving on a long road trip. He currently has 9 gallons of gas in his car. Each hour that he drives, his car uses up 2 gallons of gas. How much gas would be in the tank after driving for 3 hours? How much gas would be left after

Answers

Answer: 3 gallons

Step-by-step explanation:

From the question, we are informed that Connor is driving on a long road trip and currently has 9 gallons of gas in his car. We are also told that for every hour that he drives, his car uses up 2 gallons of gas.

After driving for 3 hours, his car would have used:

= 3 × 2 gallons

= 6 gallons of gas

Amount of gas left will be:

= 9 gallons - 6 gallons

= 3 gallons

Can someone just tell me the answer you don’t have to explain it pleaseeeeee for #13 And #15

Answers

Answer:

13) (-5,1)

Step-by-step explanation:

-3 3/5 x (-8 1/3)= ;-;just write the answer no need to explain. I'm tryna cheat on I-ready and I'm too lazy to do this in my head ;w;.

Answers

the answer is 30( -3 3/5*(-8 1/3

algebra 1 I need help ​

Answers

There's a bit of lack of context but I think the question is just asking what variables to put in for Lucy and Howard. There seems to be no need to answer any math problem.

I suggest using the variables x and y or l for Lucy and h for Howard. Remember to use lowercase letters.

someone help me pls

Answers

Answer:

1) x = 0

2) x = 2

Step-by-step explanation:

1)

12 = -4(-6x - 3)

First, we distribute.

12 = 24x + 12

Then, we combine like terms.

12 - 12 = 24x

0 = 24x

Finally, we divide 24 on both sides.

We got 0 = x, or x = 0

-

2)

-20 = -4x - 6x

First, we simplify.

-20 = -10x

Then, we divide -10 on both sides.

We got 2 = x, or x = 2

-

Hope this helps!

Solve using order of operations
Problem #1: 5 + 8: 2 - 7
Problem #2:12 X 3 - 42 + 20
Problem #3:4 :1 +8 X 2
Problem #4:17 x 3 + 15 : 3

Answers

1. 2
2. 14
3. 20
4. 56
if the : means something other than division then these r wrong sorry

9=7d+8(9-2d)

A d=-1/9

B d=-9

C d=7

D=1/7

Answers

[tex]9=7d+8(9-2d)\\9=7d+72-16d\\9=-9d+72\\-72+9=-9d\\-63=-9d\\d=7[/tex]

Also for the 8(9-2d), simplify by multiplying the 8 into the (9-2d) as we get (8*9)-(8*2d) = 72-16d

Therefore, the answer is d = 7 aka C.

A football team loses 4 yards on there first play loses 13 on there second play then gains 2 yards on thrid play find the change in yards in three plays

Answers

Answer:

Step-by-step explanation:

Play 1 they lose 4y

-4

Play 2 they lose 13y

-13

Total so far we have

-17

play three they gain 2y

-17+2=-15

Over the course of three plays the team loses 15 Yards.

Ali has x cards.
Belinda has twice as many cards as Ali.
Charlie has 5 more cards than Ali.
They have a total of 33 cards.
(a) Show that 4x + 5 = 33
(b) Work out the number of cards Ali has.

Answers

━━━━━━━━━━━━━━━ ♡ ━━━━━━━━━━━━━━━  

If Ali has x cards, then Belinda has 2x cards.

If Ali has x cards, then Charlie has x+5 cards.

2x (Belinda) + x+5 (Charlie) + x (Ali) = 33 (total)

2x + x+5 + x = 33

Now simplify the equation... x+x+5 can be simplified as 2x+5.

2x+5 plus 2x can become 4x+5.

So their total number is 4x+5.

So 4x+5=33.

You want to isolate the variables and numbers.

To remove the 5 from the left side, subtract 5 from both sides.

4x+5-5=4x - 33-5=28

So the equation now is 4x=28

To remove the 4, divide each side by 4.

4x÷4=x - 28÷4=7

So x equals 7, Ali has 7 cards.

━━━━━━━━━━━━━━━ ♡ ━━━━━━━━━━━━━━━  

Hey mate
Here is tour answer!

breifly describe the rules of multiplying and dividing integers

Answers

Answer:

Just multiply the absolute values and make the answer positive. When you multiply two integers with different signs, the result is always negative. Just multiply the absolute values and make the answer negative. When you divide two integers with the same sign, the result is always positive.

Step-by-step explanation:

Step-by-step explanation:

in multiplication:-

- × - = +

+ × - = -

- × + = -

+ × + = +

Can someone please help me

Answers

Answer:

15.231

Step-by-step explanation:

Simplify the following algebraic expression:


- 2(x - 1) + 3(6x – 7)

Answers

Answer:

16x-19

Step-by-step explanation:

Step-by-step explanation:

Hey, there!

While simplifying the algebraic expression you must remember: multiply or take LCM first and then add or or subtract like terms then if there is division then you may cut like terms of numerator and denominator.

Here,

[tex] - 2(x - 1) + 3(6x - 7)[/tex]

Is given.

Multiply (x,-1) by -2 and (6x,-7) by 3.

[tex] (- 2x + 2) + (18x - 21)[/tex]

open brackets.

[tex] = - 2x + 2 + 18x - 21[/tex]

Add and subtract like terms.

[tex] = - 2x + 18x + 2 - 21[/tex]

[tex] = 16x - 19[/tex]

Therefore, the answer is (16x - 19).

Hope it helps.....

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