Question

3. Each pail of plaster covers 97 square feet of ceiling. How many pails of plaster would you need to buy to cover the ceiling of a room with walls 14 feet long?A.3 pailsB.4 pailsC.6 pailsD.5 pails

Answer 1

Given that:

Each pail of plaster covers 97 square feet of ceiling.

To find how many pails of plaster would you need to buy to cover the ceiling of a room with walls 14 feet long, we find the area, A, of the ceiling

To find the area, A, the formula is

`\begin{gathered} A=l^2 \\ Where \\ l=14\text{ feet} \end{gathered}`

Substitute 14 feet for l into the formula to find the area, A,

`A=14^2=196\text{ square feet}`

Where

1 pail of plaster covers 97 square feet, the number of pail of plaster that will cover the ceiling will be

`\begin{gathered} For\text{ 196 square feet,} \\ =(196)/(97)=2.02061\text{ pails} \end{gathered}`

Since, 2.02061 pails will cover the ceiling

Hence, the answer is approximately 3 pails (option A)