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CBSE Class 9 Answered

Volume of sphere is =4/3pie (r)^3. How it is derived
Asked by | 07 Jun, 2008, 12:41: PM
Expert Answer

The volume of a sphere can be derived using integration(calculus).

In finding the volume by integration what we basically do is divide the whole sphere is infinitely many thin discs each with a small height dx and an area pie*r2 where r varies for all th discs. We can easily calculate the volume of such a disc by using the formula volume = height*surface area. To find the volume of the whole sphere we need to add the areas of all the small sections which we do with the help of integration.

Answered by | 19 Jun, 2008, 12:40: PM
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