Question

Circumference of a semucircle is 216mts than its radius

Answer 1

Circumference of a semi circle is half of the circumference of full circle. ( 1/2 x 2 x pi x r)

Circumference of semi circle = pi x r

From the problem,

216 = 3.14 x r

Radius = 216/3.14

Radius = 68.7 m