Question

A spool has a diameter of 3.5 if a string makes 15 turns around it what is its length

Answer 1

Answer:

The length of the string is 165 cm.

this is the answer

Answer 2

Answer :

• length is 165cm

Given :

• Diameter = 3.5

To find :

• Length

Solution:

Given Diameter is 3.5m

As we know that:

• Circumference = πD

⇾ Circumference = πD

⇾ Circumference = π(3.5)

⇾ Circumference = 3.5π cm

Circumference is 3.5π cm

Now we have to find length:

⇾ 1 turns = 3.5π cm

⇾ 15 turns = 3.5π × 15

⇾ 15 turns = 52.5π cm

⇾ 15 turns = 165 cm

so length is 165cm

∴The length of string is 165 cm

More Explanation:

• Circumference is nothing but the distance around the circle
• we can find Circumference with the help of using Diameter or radius of a circle