Question

find the perimeter of a semicircular Protector of radius 7.2 CM also find its area
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Answer 1

Given:- radius= 7.2cm

To find:- Perimeter of semicircle

Solution:-

Perimeter or Circumference of semicircle = πr

=3.14×7.2

=22.608cm

Area of semicircle = πr^2

=3.14×7.2×7.2

=162.7776 sq. cm