Question

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?

• A. 12
• B. 4
• C. 8
• D. 6

Answer 1

Answer:

C. 8

Since laddoos are spherical and made of the same material, their volumes are equal.

Volume of a sphere ∝ (r^3)

Let:

• Radius of big laddoo = (7) cm

• Radius of small laddoo = (3.5) cm

Number of small laddoos:
$= \left(\frac{7}{3.5}\right)^3$
$= (2)^3$
$= 8$

8 laddoos of radius 3.5 cm can be made.