The difference between radii of the two circles is 7 cm and between th

SOLUTION

Let the radius of the smaller circle be r and that of the larger circle be R.

As per question R – r = 7 cm …… (1)

Now Area of Larger circle – Area of Smaller circle = 2310

 –  = 2310

 = 2310

 = 2310

 =

 = 105 cm ……(2)

From Eq. (2) – (1)

2r = 98 cm

r = 49 cm