Question

Which is the area of a rectangle with a length of 21 feet and a width of 15 feet

Answer 1

315 ft^2

Explanation:

Answer 2

Answer:
`315\ ft^2`

Explanation:

In order to calculate the area of a rectangle, you can use the following formula:

`A=lw`

Where "l" is the lenght of the rectangle and "w" is the width.

In this case you know that this rectangle has a length of 21 feet and a width of 15 feet. Then:

`l=21\ ft\\w=15\ ft`

Therefore, you can substitute these values into the formula, getting that the area of this rectangle is:

`A=(21\ ft)(15\ ft)\\\\A=315\ ft^2`