Question

Two circular cylinder of equal volume have their heights in the ratio 1:3 the ratio of their radii is

Answer 1

Let r1 ana r2 be the radii of cylinder

Ratio of heights is 1:3
Since height of cylinder of radius r1 will be h
height of cylinder of radius r2 will be 3h
Volume of cylinder of radius r1 is equal to cylinder of radius r2

Pie*r1 squre h equal to pie * r2 squre 3h
Pie and pie cancelled
r1 h equal to r2 3h
r1/r2 equal to 3h/h
r1/r2 equal to 3/1
r1:r3 equal to 3:1