Find a formula for the described function.

a rectangle has perimeter 10 m. express the area a of the rectangle as a function of the length, l, of one of its sides.

The area of the rectangle is .

Step-by-step explanation:

The perimeter of a rectangle is

where, L is length and W is width.

It is given that perimeter of a rectangle is 10m.

Divide both sides by 2.

Subtract L from both sides.

Area of a rectangle is

Substitute W=(5-L) in the above formula.

Therefore, the area of the rectangle is .

6.5

step-by-step explanation:

you said it was in the question

~courtney