Question

The radius of a cemicircle is 7cm Then it's perimeter is (a)58 (b)29 (c)36 (d)77​

Answer 1

Answer:

radius of circle= 7 cm

circumference of circle = 2πr

circumference of semicircle = 2πr/2

= πr

= 22/7×7

= 22 cm

then, perimeter of semicircle = circumference of semicircle+diameter

= 22 +7+7

= 22+14

= 36cm

I hope this will help you