A shopkeeper has one spherical laddoo of radius 7 cm. With the same material, how many laddoos of radius 3.5 cm can be made?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 8.
Volume of a sphere = (4/3) × π × r3
Big laddoo: radius 7 cm → small laddoo: radius 3.5 cm (half).
Number of small laddoos = (7 ÷ 3.5)3 = 23 = 8