Question

3. Two spheres of same size are made from
copper and iron respectively. Find the ratio
between their masses. Density of copper
8,900 kg/m'and iron 7,800 kg/m².​

Answer 1

Answer:

89:78

Explanation:

Volumes are the same

Density = mass/ volume

let mass of copper be m1 and iron be m2

d1=m1/v. d2=m2/v

m1=d1*v. m2=d2*v

m1:m2=d1*v:d2*v=8900*v/7800*v

=8900/7800=89/78

= 89:78