Find the area of a rectangle if its width is 4 m less than its length and the perimeter is 96 cm.
May 18, 2021 | education
| Let’s immediately clarify that the width is less than 4 m, but 4 cm.
Let the width of our figure be expressed through the variable a.
Then its length can be represented as a + 4.
Since we know that the perimeter of the figure is 96 centimeters, then we write down the equation and find out the size of the figure:
(a + a + 4) * 2 = 96;
2a + 4 = 48;
2a = 44;
a = 22;
22 + 4 = 26.
Let’s determine how many square centimeters the area of our figure will be expressed:
22 * 26 = 572.
Answer: The area is 572 cm2.
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