Question

the circumference of a semicircle with a diameter equal to 8 meters

Answer 1

Answer:

circumference of semi circle = 1/2 (2× pi × r)= pi × r

r is the radius = half of diameter = 8/2= 4 m

hence circumference = pi × 4= 3.14 × 4 =12.56 m

Answer 2

Circumference of the semicircular is = pi x r + 2r
= 3.14 x 4+ 2x4
= 12.56+8
=20.56 meter