Question

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

Answer 1

Answer:

315 ft^2

Step-by-step explanation:

Answer 2

Answer: $315\ ft^2$

Step-by-step 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:

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