Question

the perimeter of a semi circle is 28.8cm then its area is

Answer 1

Perimeter of semi circle=pie r
28.8cm=3.14×r
r=28.8/3.14
r=9.17
Area of semi circle=pie r^2/2
=3.14×9.17×9.17/2
=132.01 sq. cm

Answer 2

Heya!

here is your answer:

See the attachment.