Two cylindrical jars have their diameters in the ratio 3 : 1, but height 1 : 3. Then the ratio of their volume is

Given,

Ratio of diameters of cylinders = 3:1

So, ratio of their radii = r₁:r₂ = 3:1

Ratio of their heights = h₁:h₂ = 1:3

So, ratio of their volumes = π(r₁)²h₁ : π(r₂)²h₂ =