Two cylindrical flower pots need to be painted. The flower pots are 1.5 ft in diameter and 2.5 ft high. A one litre can of paint covers 100 ft2. Will one can be enough to paint the two flower pots with two coats of paint?
Let's make the following denotations:
D = 1.5 ft H = 2.5 ft S = 100 ft²
D = 2*R ==> R = 1.5/2 = 0.75 ft - the radius of a pot.