Question

Area of a circle is 154 cm² find the radius and circumference

Answer 1

Answer:

Area of circle = πr^2

154cm^2= 22/7X r^2

154X7/22 = r^2

49 = r^2

r = √49

r = 7cm

Radius of circle is 7 cm

Circumference of circle = 2πr

2 X 22/7 X 7

44 cm