You may recall that the area of a rectangle is A=L⋅W, where W is the width and L is the length. Suppose that the length of a rectangle is 3 times the width. If the area is 300 square feet, then what is the width of the rectangle, in feet?

Do not type the units in your answer.

The width is 10 feet.

Step-by-step explanation:

We know that the area of a rectangle is given by the formula:

Where L is the length and W is the width.

We are given that the length of the rectangle is three times the width. In other words:

The total area is 300 square feet. And we want to determine the width of the rectangle.

So, substitute 300 for A and 3W for L:

Multiply:

Divide both sides by three:

And take the principal square root of both sides. So:

Thus, the width of the rectangle is 10 feet.

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step-by-step explanation: