The area of a rectangular piece of plastic is 90 square millimeters. The piece of plastic is 10 millimeters wide. How tall is it? _____ millimeters

Define Variables: Let w be the width of the rectangle and h be the height of the rectangle. The area A of a rectangle is given by the formula A = w * h.Substitute Values: Given the area of the rectangular piece of plastic: 90 square millimeters and the width w: 10 millimeters. Substitute these values into the area formula to find the height h. 90 = 10 * hSolve for Height: Solve for h by dividing both sides of the equation by the width 10. 90 / 10 = (10 * h) / 10 9 = hFinal Height: The height of the rectangular piece of plastic is 9 millimeters.

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The area of a rectangular piece of plastic is $90\,\text{square millimeters}$ . The piece of plastic is $10\,\text{millimeters}$ wide. How tall is it? $\newline$ $\_\_\_\_\_$ millimeters

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Algebra 1

Area and perimeter: word problems

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Q. The area of a rectangular piece of plastic is

90\,\text{square millimeters}

. The piece of plastic is

10\,\text{millimeters}

wide. How tall is it?

\newline

\_\_\_\_\_

millimeters

Define Variables: Let $w$ be the width of the rectangle and $h$ be the height of the rectangle. The area $A$ of a rectangle is given by the formula $A = w \times h$ .
Substitute Values: Given the area of the rectangular piece of plastic: $90$ square millimeters and the width $w$ : $10$ millimeters. Substitute these values into the area formula to find the height $h$ . $\newline$ $90 = 10 \times h$
Solve for Height: Solve for $h$ by dividing both sides of the equation by the width $10$ . $\frac{90}{10} = \frac{10 \times h}{10}$ $9 = h$
Final Height: The height of the rectangular piece of plastic is $9$ millimeters.