Question

Each pail of plaster covers 90 square feet of ceiling. What is the least number of pails of plaster you would need to buy to cover the ceiling of a square room with walls 14 feet long?

Answer 1

3
4
5
or
6

Answer 2

first find the area of ceiling
which is =14*14=196 square feet
now 1 plaster cover=90 square feet
so plaster required=196/90

Answer 3

196/90>2 so we require 3 plasters