Question

find the perimeter of the following figure ​

Answer 1

Answer:

circumference of circle = 2πr but here it's a semi circle so, its perimeter or circumference = 2πr/2

so, diameter=21cm

radius = diameter/2

= 21/2

=10.5cm

now perimeter of the figure = 2πr/2

= 2*22/7*10.5/2

=2*11*1.5

33cm