Question

The perimeter of semicircular plate is 108cm. Find its area

Answer 1

The perimeter = (pi)r + 2r where r is the radius. Here

r[(22/7) + 2] = 108, or

r = 108/[(22/7) + 2] = 21

So the area of the semicircle is (pi)*(21^2)/2 = 693 sq cm.

Answer 2

Answer:

693cm²

Step-by-step explanation:

check the attachment for the explanation