1.

Two cylinders have their radii 4:5 and their height is 5:6 find the ratio of their curved surfacepls do it ​

Answer»

RADIUS= 4X

height=5y

Curved surface area = 2*pi*r*h

=2*pi*4x*5y

Case 2

radius=5X

height=6y

Curved surface area = 2*pi*5x*6y

Case1/Case2 = 2*pi*4x*5y/2*pi*5x*6y

( SIMPLIFICATION = cancel 2 to 2 and pi to pi and X to x and y to y)

=4*5/5*6

20/30 ( simplification )

2: 3



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