Question

A right circular cylinder just and close a sphere of radius r find surface area of the sphere surface area of the cylinder ratio of the areas obtain

Answer 1

The surface area of sphare = 4pie r^2

for cylender radius of base = r

height =2r

covered surface area of cylender = (2pie r)×2r=4pie r^2

ratio of the obtain surface area= (4pie r^2)/ (4pie r^2)

1:1 is your answer..

hope it help you dear....