Question

A closed cylindried tank of diameter 2 com and height 4cm is made from a sheet of mited. How much shut of mild is requird?
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Answer 1

Answer:

V=1884 Cubic mm

We know that the volume of the Sphere is given by the formula

Where r is the radius and h is the height of the cylinder

We are asked to determine the radius of the hollow cylinder , which will be the difference of the solid cylinder and the cylinder being carved out.

Where

is the the volume of solid cylinder with radius  and height h

is the volume of the cylinder being carved out with radius  and height h

where

mm ( Half of the bigger diameter )

mm ( Half of the inner diameter )

mm

Putting these values in the formula for V we get

Step-by-step explanation:

Hope this helps:)  ジョセフ