A manufacturer makes conical funnels for professional painters. The
funnels are formed from plastic with an 8-inch diameter base and height
of 9 inches. After the cones cool, a machine cuts off 1 inch of the tip to
leave a 1-inch diameter hole in the end. What is the volume of the funnel?
Round your answer to the nearest tenth and do NOT include units.

151

Step-by-step explanation:

In this situation we have two cones, the big cone with volume and the small cone with volume .

Now, if we want to know the total volume we have to substract from  , but first we have to calculate each volume:  

For the big cone:

Where:

Then:

Volume of big cone

For the small cone:

Where:

Then:

Volume of small cone

Calculating the total volume:

Finally:

7.3

step-by-step explanation: