Question

the length of the diameter of the solid sphere of the lead is the 14 cm if the square is the welded let us write by a calculated how many sphere with the length of the 3.5 CM radius can be made​

Answer 1

Assuming it’s the length of radius (not diameter) = 3.5cm

Given:

Diameter of big solid sphere = 14cm

Radius of small solid sphere = 3.5cm

Formulas used:

1. Diameter of sphere = 2×Radius

Radius = 14/2 = 7cm

2. Volume of big sphere = Volume of small spheres × No. of small spheres

3. Volume of sphere = (4/3)×π×r3

Volume of big sphere = (4/3)×π×(7)3 cm3  

Volume of small sphere = (4/3)×π×(3.5)3 cm3

Putting the values,

⇒ (4/3)×π×(7)3 = (4/3)×π×(3.5)3 × No. of small cubes

⇒ No. of small cubes = (7)3/(3.5)3 = 8