Question

1. What is the circumference of a semi-circle with a diameter of 12 cm? (HINT: find the circumference and divide by 2 because it is half a circle!)

A. 37.68 cm

B. 18.84 cm

C. 56.52 cm

D. 113.04 cm

Answer 1

18.84cm

Explanation:

Formula for circumference= 2πr

2x3.14x(12/2)

2x3.14x6

37.68

Circumference of half circle= 37.68/2

=18.84cm