Question

Find the perimeter of this quarter circle with radius,

r
= 2mm.
Give your answer as an expression in terms of
π
.

Answer 1

pi

Explanation:

First find the circumference of the circle

C = 2 * pi*r

C = 2 * pi *2

C = 4pi

A quarter circle is 1/4 of a circle

1/4 C = 1/4 (4pi)

1/4C = pi