Question

7. The inner and outer radius of a circular ring are 25 cm and 32 cm respectively. Find the
area of the ring.step by step
​

Answer 1

Answer:

Inner radius = r = 25cm

Outer radius = R = 32cm

area of inner circle = $\pi r^{2}$

                               = 22/7 x 25 x 25

                               = 13,750/7

                               = 1964.28

area of outer radius = $\pi R^{2}$

                                 = 22/7 x 32 x 32

                                 = 22,528/7

                                 = 3218.28

area of ring = 3218.28 - 1964.28 = 1,254(approx)