Question

Find the perimeter of semicircle and if area of the circle is given as 15400 cm

Answer 1

Answer:

perimeter of circle =2πr

Step-by-step explanation:

area=πr^2

15400=22/7×r^2

r^2=15400×7/22

r^2=4900

r=√4900

r=70cm

perimeter=2πr

p=2×22/7×70

p=440cm