Question

If the perimeter of semi-circular park is 72 m. Find its radius and area.​

Answer 1

Step-by-step explanation:

if perimeter is 72, the radius will be it's half that is,

72/2=36m

it's area is 36×4=144m

Answer 2

Step-by-step explanation:

let radius = r

perimeter of a semi-circular park = (π + 2)r = 72

=> (22/7 + 2)r = 72

=> (36/7)r = 72

=> r = 72×7/36 = 14 m

area = π×r×r/2 = (22/7) × 14 × 14/2 = 308