Question

Find the perimeter of this semi-circle with diameter,

d
= 32cm.
Give your answer as an expression in terms of
π
.

Answer 1

let the

radius = diameter/2= 32/2= 16cm

now

perimeter of semi circle = 1/2×22/7×r

= 1/2×22/7×16

= 25.14cm

hence perimeter of semi circle is 25 .14cm