"A square lawn with side 100 m long has a circular flower bed in the centre. If the area of
Channel: Doubtnut
Date: 2020-04-05

"A square
 lawn with side 100 m long has a circular flower bed in the centre. If the
 area of the lawn, excluding the flower bed, is 8614 m2, the radius
 of the circular flower bed is
(a) 21
 m (b) 31 m (c) 41 m (d) None of these"