A solid sphere of radius 6 cm is melted and re-casted into a hollow cylinder of uniform thickness. If the external radius of the base of the cylinder is 5 cm and its height is 32 cm, find the uniform thickness of the cylinder ?
A) 3 cm
B) 1.5 cm
C) 1 cm
D) 2.5 cm
Answer: C) 1 cm
Let, inner radius of cylinder be ‘x’ cm. 4/3 π(6)3 = π × 32 (52 − x2)
In the question two statements are given, followed by two conclusions, I and II. You have to consider the statements to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.