Question

if the radius of each bullet is 0.2 cm, then the number of bullets that can be made from a sphere of 8 cm radius is
A) 12500
B) 25000
C) 64000
D) 62500​

Answer 1

Answer:

64000

Step-by-step explanation:

Considering a bullet made is a sphere then volume of bullet is 4/3 πr³

Volume of bigger sphere is 4/3 πr³

4/3 π(8) ³ = 4/3 π(512)

Volume of a bullet is 4/3 πr³

4/3 π(0.2) ³ = 4/3 π(0.008)

volume of n bullet is equal to volume of bigger bullet, so

n 4/3 π(0.008) = 4/3 π(512)

or n = 512/0.008

or not = 512 * 1000/8 = 64000

So 64000 bullets can be made from the sphere.