Question

A cylindrical pipe is 28m long.its internal radius is 3.5 and external radius is 5 cm calculate:

The volume in cm,of the metal used in making the pipe

The volume of water in litres that the pipe can hold when full,correct to one decimal place

Answer 1

The volume in cm 112098 cm³.

The volume of water in liters 112 liter.

What is volume of cylinder?

The volume of a cylinder is equal to the product of the area of the circular base and the height of the cylinder.

Given: height= 28m= 2800cm, internal radius= 3.5 cm, external radius = 5 cm.

Volume of cylinder

= πr²h

= 3.14(5²-3.5²)2800

=3.14*12.75*2800

=112098 cm³

Volume of water in liter is 112.098 or 112 liter.

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