The radii of two concentric circles are 68 cm and 22 cm. The area of the closed figure bounded by the boundaries of the circles is

The radii of two concentric circles are 68 cm and 22 cm. The area of t

1.	The radii of two concentric circles are 68 cm and 22 cm. The area of the closed figure bounded by the boundaries of the circles is
A.	4140Ï€ sq.cm.
B.	4110Ï€ sq.cm.
C.	4080Ï€ sq.cm.
D.	4050Ï€ sq.cm.
Answer» B. 4110Ï€ sq.cm.

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The radii of two concentric circles are 68 cm and 22 cm. The area of the closed figure bounded by the boundaries of the circles is

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