Question

if the area of a semi circular field is 30800 sq.m. then the perimeter of the field is ?

Answer 1

THE PERIMETER OF THE FEILD IS 1019.897m

Answer 2

As we know,

AREA OF SEMICIRCLE =PI R^2/2

Given,

area of semi circle =30800 sq m

So,

Pir^2/2 =30800

r^2 = 30800*2*7/22 [since pi =22/7]

r^2=19600

r=140 m

So ,

perimeter of semi circle is pi* r

= 22/7 * 140 m

= 440 m

Hope it helps you.....