The first problem you should see is that there are two different units.
Converting units of area is more tricky than just lengths, so let's change
Once we know the surface area of 1 pot, we can just divide
Each pot has a base ( a circle) and the curved part.
You should know those formulae
Circle Area =
Total outside area of one pot =
How many pots can be painted? Divide 30 by the area of one pot.
Now be careful... Although the first decimal is more than 5, do not round up...
This means that 115 pots can be painted completely but only about