Question

A sphere cylinder and a
core ose of the
Some rodius and here height see
the ratio of their curved surfaces
areas​

Answer 1

Answer:

According to the question, the radii of cone, cylinder and sphere be r and as the heights of cone and cylinder are equal, it will be 2r as the height of sphere is 2r.

CSA of sphere = 4πr²

CSA of cylinder = 2πr x 2r = 4πr² (As h = 2r)

CSA of cone = πrl 

= πr√r² + 4r²

= πr√5r²

= πr²√5

Thus the ratio stands 4πr² : 4πr² :  πr²√5

Removing 2πr² we get 4 : 4 : √5

Step-by-step explanation:

hope u understand mate