Question

Julia is putting drywall on the wall she just built for her new garage.The wall is 30 ft.by 15 ft. If one sheet of drywall measures 6 ft. by 5 ft., how many sheets does she needto cover the wall?

Answer 1

Answer:

15 sheets

Explanation:

The wall is rectangular; thereofre, its area is the product of its height and length.

The area of the wall is

$30ft\times15ft=450\text{ ft}^2$

Now the area of one sheet of drywall is

$6\text{ ft}\times5\text{ ft}=30\text{ ft}^2$

Now we ask ourselves: how many sheets of drywall fit into an area of 450 square ft?

The answer is found by dividing the area of the wall by the area of one sheet:

$\frac{450\text{ ft}^2}{30\text{ ft}^2}=15$

This means that 15 sheets are needed to cover the wall.