A park is in the form of a square one of whose sides is 100 m . The area of the park excluding the circular lawn in the centre of the park is 8614 m2. The radius of the circular lawn is ?

A park is in the form of a square one of whose sides is 100 m . The ar

1.	A park is in the form of a square one of whose sides is 100 m . The area of the park excluding the circular lawn in the centre of the park is 8614 m². The radius of the circular lawn is ?
A.	21 m
B.	31 m
C.	41 m
D.	None of these
Answer» B. 31 m

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A park is in the form of a square one of whose sides is 100 m . The area of the park excluding the circular lawn in the centre of the park is 8614 m2. The radius of the circular lawn is ?

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A park is in the form of a square one of whose sides is 100 m . The area of the park excluding the circular lawn in the centre of the park is 8614 m². The radius of the circular lawn is ?