Question

the number of spherical balls can be made out of a solid cube of lead whose cube measures 22 cm and each ball being 2 cm diameter is

Answer 1

Length of side of a cube = 22cm
Volume of the cube = 22^3 = 10648 cubic cm

Diameter of spherical ball = 2cm
Radius = 2/2 = 1 cm
Volume of spherical ball = 4/3πr^3 = 4/3 x 22/7 x 1^3 = 4.19 cubic cm

Required number of balls = 10648/ 4.19 = 2541.28
Rounding up we get 2541 balls

Answer 2

given,
length of the cube=22cm
volume of the cube=a^3
=22^3
=10648.
now, diameter of the ball=2cm
radius=1
volume of the ball=4/3πr^3
=4/3×22/7×(1)3
=