# What is the volume of the solid produced by revolving #f(x)=sqrt(81-x^2)# around the x-axis?

##### 1 Answer

Volume

#### Explanation:

Solution 1.

The given curve is located at the first and second quadrants as shown in the graph

You will notice that the graph shows that it is a half circle with radius

Formula for volume of the sphere

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Solution 2.

To solve for the volume by the Calculus , we make use of the Disk Method

God bless....I hope the explanation is useful.