Question

Work out the perimeter of a circle with radius 3cm.

Give your answer in terms of
`\pi`

Answer 1

6π cm

Explanation:

For a circle, the perimeter is equal to the circumference. The formula for the circumference of a circle is ...

C = 2πr

where r is the radius of the circle.

__

using the formula

Substituting the given value of radius into the formula gives ...

C = 2π(3 cm)

C = 6π cm

The perimeter of the circle is 6π cm.