How many spherical lead shots each of diameter 4.2 cm can be obtained from a solid rectangular lead piece with dimensions 66 cm, 42 cm and 21 cm?

Volume of cuboid = lbh where, l = length, b = breadth and h = height

For cuboidal lead ;

Length, l = 66 cm

Breadth, b = 42 cm

Height, h = 21 cm

Volume of lead = 66(42)(21) = 58212 cm³

For spherical shots,

Diameter = 4.2 cm

Radius, r = 2.1 cm

Now,

So, 1500 bullets can be made from lead.