The perimeter is rectangular 42cm. the ratio of its length to width is 4: 3. Find the area of a rectangle

univerkov | January 5, 2021 | education

Let the length be 4x and the width 3x.
Then, 2 (4x + 3x) = 42
4x + 3x = 21
7x = 21
x = 3
This means that the length of the rectangle is 4 * 3 = 12 cm, and the width is 3 * 3 = 9 cv
Well, now we find the area: 9 * 12 = 108 cm ^ 2
Answer: 108 cm ^ 2

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