Question

calculate the weight of steel ball whose diameter is 21 cm and density is 7.8 gram/cubic cm
plz give me answer with explanation

Answer 1

$density = mass \div volume$
Mass=density/volume
By calculations of volume,we get V=11×21×21cm³
now,
mass=7.8×11×21×21=37837.8g=38kg(approx)

Answer 2

Answer:

Mass=density/volume

By calculations of volume,we get V=11×21×21cm³

now,

mass=7.8×11×21×21=37837.8g=38kg(approx