Question

a cylinder and cone have equal height and equal radius if their curved surface area are in the ratio 8:5 show that the ratio of radius to height of each os 3:4

Answer 1

Let the height and radius of a Cylinder and Cone be R.
Then,
The ratio of their CSA = 2πrh:πrl= 8:5

2×22/7×r×r:22/7×r×under root r²+r² = 8:5

SOLVE THIS YOU WILL GET THE RATIO OF RADIUS AND HEIGHT OF CONE AND CYLINDER IS 3:4