"Four equal circles are described at the four corners of a square so that each touches
Channel: Doubtnut
Date: 2020-04-05

"Four equal
 circles are described at the four corners of a square so that each touches
 two of the others. The area enclosed by the circumferences of the circles is `13 5/7`
sq. cm.
 Find the radius of the circle.
(a) 2.5
 cm (b) 4 cm (c) 6 cm (d) 7.5 cm"