Write a function to calculate the volume of a box.

Approximately how many stones are the famous pyramids at Giza made up of? Use GHCi for your calculations.

volumeBox w h d = w * h * d

One approach for the Giza problem is starting from the pyramid volume and the estimated stone volume. Using general functions for the task, that might look like this in GHCi:

Prelude> let volumeBox w h d = w * h * d -- Just as above.
Prelude> let volumeSquarePyramid b h = b * b * h / 3
Prelude> volumeSquarePyramid 230.4 146.5 / volumeBox 1 1 1
2592276.48

Exercises

Write a function to calculate the volume of a cylinder.