Question

Find the area of the region between two concentric
circles given in if the length of the chord
of the outer circle touching the inner circle is 14 cm.​

Answer 1

Answer:

154

Explanation:

Let 'r' be radius of smaller circle & 'R' be radius of bigger circle .

According to pythagoras theorem,

r^2 + 7^2 = R^2

Or, R^2 - r^2 = 49

[As 'r' will also be Perpendicular Bisector]

Area = π(R^2 - r^2)

= (22/7)*49

= 22*7

= 154