Question

the area of a circle is 154 cm square calculate it's radius

Answer 1

Answer:

A = 154 cm ^2

Area of circle = pie r ^2

So,

154 = pie r^2

154 = 22/7 × r^2

154 ×7/22 = r^2

7×7 = r^2

49 = r^2

7 = r

hope it helps

Answer 2

Answer:

area of circle= 154

22/7*r2=154

22r2=154*7

22r2= 1178

r2= 1178/22

r2=49

r=√49

r = 7 cm