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### Zazuzu says

Volume of cone = (1/3) * pi * r^2 * height

if the diameter is 5.08, the radius is 2.54.

(1/3) * pi * (2.54)^2 = 6.75610......

the answer is about 6.75610

### Mark says

Use the formula:

Volume = 1/3 x Pi x radius x radius x height.

The radius of the cone is 2.54 as this half of 5.04.

Now all you need to do is sub in the height and radius into the formula given above:

1/3 x 3.14 x 2.54 x 2.54 x 8.1

which gives 6.8 centimetres squared rounded to 1 decimal place.