Question

if the perimeter of a semi circle park is 72m find its area and radius

Answer 1

Let radius be x
Perimeter of semicircle = (2pi(r))/2 + 2r
ATQ. 72= (2x22/7x r)/2 + 2r
r= 14
Area of semicircle = (pi(r)^2)/2
ATQ. (22/7x 14^2)/2
= 616/2
= 308
So, area is 303m^2
And radius is 14m
I hope this is right