Question

A neighborhood has provided trash cans to residents to dispose of their waste. All trash cans have a diameter of 1 meter and a height of 0.75 meters. What is the minimum number of trash cans required to dispose of 10 cubic meters of waste?

Answer 1

First, you have to find the area of each garbage can- v\[v=\pi rh ^{2} \] and our radius is half of our diameter.

Substituting our values, we get (Pi)(.75)((.5)^2)
for an answer of 0.58904862254 cubic meters, but don't round till the very end.

To find how much they need, we divide the amount we want to dispose- 10 cubic meters by the amount one garbage can will hold-

10/0.5890486224

for an answer of 16.9765272634

we can't have 16.9765272634 trash cans, so we round to 17.

We will need a minimum of 17 trashcans.