The area of the rectangle is 19 cm. One of the sides is 7 cm. Find the side of the rectangle that is not equal to it.

univerkov | August 22, 2021 | education

Since the opposite sides of a rectangle are equal, its area is calculated by the formula:

S = a * b. In order to find the unknown factor, we divide the product by another:

b = S: a. We know that the area of such a figure is 19 cm², and the length = 7 cm, therefore:

b = 19/7 = 2 5/7 cm.

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