The perimeter of the rectangle is 42 cm. The ratio of its length to width is 4: 3. Find the area of the rectangle
| December 21, 2020 | education
since the ratio of its length to width is 4: 3, the length can be taken as 4x, and the width as 3x:
(4x + 3x) 2 = 42
7x = 21
x = 3
one side is 3 * 4 = 12, and the other 3 * 3 = 9.
Find the area:
S = 12 * 9 = 108
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