Question

12. A boy has a spherical ladoo whose
radius is 4 cm. A girl has 8 spherical ladoos
each of radius 2 cm. Find the ratio of the
volumes of ladoos girl has to the ladoo boy
has. (2016-GL3UFU4, 12L7U55; 2016-3NBOATS)​

Answer 1

Step-by-step explanation:

Radius of laddoo=5cm

Volume of laddo=4/3×pi (radius)^3 cc=4/3×pi×5^3cc

Radius of smaller laddoo=2.5cm

Volume of each small laddoo=4/3×pi 2.5^3cc

Let n small laddoos be made from the large laddo.

Therefore 4/3×pi×5^3=4/3×pi×2.5^3×n

=> 5^3=n×2.5^3

=> n =( 5/2.5)^3=2^3=8

8 laddoos of radius 2.5cm can be made from 1 laddoo of radius 5cm.