Question

find the ratio of csa of 2 cones if diameter of their bases are equal and slant heights in ratio 3:4.

Answer 1

let the base radii are equal = r units (since diameters equal)
ratio of slant heights =L:l=3:4

ratio of csa = (pi*r*L)/(pi*r*l)
after cancellation
ratio = L/l
=3:4