Question

The floor of a rectangular deck has an area of 600 sq. ft. The floor is 20 ft. wide. How long is the floor?

Answer 1

`30` ft

Explanation:

Area `=l*w`

`600=l*20`

`600/20=l*20/20`

`= 30` ft

Answer 2

The length of the rectangular deck is `30` `"ft"` long.

Explanation:

The area of a rectangle is `l * w`, where `l = "length"` and `w = "width"`.

We know that the area is `600` `"ft"^2` and the width is `20` `"ft"`.

Therefore we can plug it into the formula and find the length:
`A = lw`

`600 = l(20)`

Divide both sides by `color(blue)20`:
`600/color(blue)20 = (l(20))/color(blue)20`

`30 = l`

`l = 30`

The length of the rectangular deck is `30` `"ft"` long.

Hope this helps!