Question

The diameters of two cones are equal if their slant heights are in ratio7:4.Find the radius of their C.S.A's

Answer 1

let slant height be 7x 4x then solve

Answer 2

7:4
See CSA = pi * r * l
Since radius is equal they will get cancelled, so will the pi.
What will remain is the slant height so the ratio will be 7:4