Question

A cylindrical water tank is of base 7m and hieght 2.1m. Find the capacity of the tank in litres

Answer 1

 

Volume of a Cylinder:

In geometry, a cylinder is a three-dimensional shape with a circular base, a circular top and straight sides. It is the solid figure that you get when you rotate a rectangle about one of its sides. In most cases when we talk about the volume of a cylinder, we are talking about how much liquid it can hold.

The strictly correct way of saying it is "the volume surrounded by a cylinder" - the amount of liquid it holds. But many textbooks simply tell "the volume of a cylinder" to mean the same thing.

Answer 2

HEY .....LOOK...

WE HAVE GIVEN THE BASE ....

THE BASE OF A CYLINDER MEANS IT IS CIRCLE .....

IF ITS BASE IS OF 7 CM ....

THEN IT MUST BE ITS DIAMETER .....

(OR IT COULD BE THE AREA BUT IT IS NOT WRITTEN IN THE PROBLEM.....)

SO RADIUS = 1/2× DIAMETER....

= 1/2×7

= 3.5CM

NOW WE HAVE BOTH RADIUS AND HEIGHT OF CYLINDER.

SO THE VOLUME OF A CYLINDER

= pie ×r×r× h

= 22/7× 3.5×3.5×2.1

= 80.82.....

So the answer of your question is 80.82

So I hope it will help you......

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