The surface area of a sphere is same as the curved surface area of a right circular cylinder whose height and diameter are 10 cm each. The radius of the sphere is Select the correct option:	A) 3 cm	B) 5 cm	C) 6 cm	D) 8 cm	E) None
Solution   4Î R2	= 2Î 5x10   â‡’ R2 = (5x10/2)   â‡’ 25   â‡’ R = 5 cm.   Answer 5 cm
<result>B</result>
The surface area of a sphere is same as the curved surface area of a right circular cylinder whose height and diameter are 10 cm each. The radius of the sphere is