# What is the volume of the solid produced by revolving #f(x)=cosx, x in [0,pi] #around the x-axis?

##### 1 Answer

Nov 26, 2016

#### Explanation:

General formula for volumes of revolution:

(the pi can be taken out of the integral in either case to simplify the calculation)

The question requires solving:

This is made easier using double angle formulae:

By taking the

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