Question

The areas of two concentric circles are 186 cm² and 172 cm². Find the difference between the radii of the two circles.

Answer 1

Answer:

hey mate ✌️

Let two radius are 'x' and 'y', so,

x+y=42....(1)x+y=42....(1)

and

x-y=28.....(2)x−y=28.....(2)

Now adding (1) and (2), we get

2x=702x=70

x=35x=35

Putting in (1)

35+y=4235+y=42

y=7y=7

Therefore, radius of two concentric circles are 35 cm and 7 cm.

hope it will be helpful