The length of the first rectangle is 8 cm, and the width is 7 cm, the area of the second rectangle is equal to the area
| January 6, 2021 | education
The length of the first rectangle is 8 cm, and the width is 7 cm, the area of the second rectangle is equal to the area of the first rectangle and its width is 4 cm which is equal to the length of the second rectangle.
Find the area of the first rectangle:
S = a * b = 8 * 7 = 56 cm².
Let x be the length of the second rectangle and y the width. We express the length of the rectangle from the formula for the area of the rectangle:
x = S / y;
x = 56/4 = 9 cm.
Answer: the length of the second rectangle is 9 cm.
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