Lateral surface area of a cube is 420 cm2 less than the lateral surface area of a cylinder Height of...........

Quantitative Aptitude (RBI Grade B) Mensuration 2D

Lateral surface area of a cube is 420 cm2 less than the lateral surface area of a cylinder. Height of cylinder is 2R cm and radius is R cm. If the side of cube is equal to the radius of the cylinder, find the approximate area of circle whose radius is (R + 3) cm.

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