Question

What is the exact circumference of the circle?
101 it
201 ft
401 ft
600 ft

Answer 1

Given:

The diameter of a circle = 20 feet

To find:

The exact circumference of the circle.

Solution:

We know that the radius is half of the diameter of the circle.

The diameter of a circle is 20 feet. So, the radius of the circle is 10 feet.

The circumference of the circle is:

`C=2\pi r`

Where, r is the radius.

Substituting
`\pi = 3.14, r=10`, we get

`C=2(3.14)(10)`

`C=(6.28)(10)`

`C=62.8`

Therefore, the exact circumference of the circle is 62.8 feet.

Note: All options are incorrect.