Question

The circumference of a circular track is 132cm and its area is 252cmsquare . Find both the radii

Answer 1

Answer:

here circumference big circle is 132cm

I,e 132=2πr

πr=66

r=21cm

Answer 2

Step-by-step explanation:

Circumference of circle = 2πr

132 = 2πr

66 = 22/7*r

66*7/22 = r

21 = r

radius = 21 cm

area of circle = πr^2

252 = πr^2

252 = 22/7 * r^2

252*7/22 = r^2

1764/22 = r^2