Question

Find the perimeter of this semi-circle with diameter,

d
= 37cm.
Give your answer rounded to 1 DP.

Answer 1

58.1cm

Explanation:

perimeter of a semi-circle = πd/2

d is the diameter

Given

diameter = 37cm

Perimeter of the semi circle = π(37)/2

Perimeter of the semi circle = 18.5(3.14)

Perimeter of the semi circle = 58.09 cm

Hence the perimeter of the semi-circle is 58.1cm