Question

The radius of a circle is 20cm Three more concentric circles are drawn

inside it in such a manner that it is divided into four parts of equal area. Find the

radius of the smallest of the three concentric circle

Answer 1

Hi.......
let radius of smaller circle be r

4 × area of smallest circle=area of biggest circle

$4 \times 3.14 \times {r}^{2} = 3.14 \times 20 \times 20$

r^2 = 400÷4

r^2= 100

r = √100

r = 10 cm

Hope it helps!!!

Mark it brainliest if it helps