The area of the rectangle is 72cm2. What is the width of a rectangle if its length is 9cm?

| May 5, 2021 | education

The area of the rectangle is 72cm2. What is the width of a rectangle if its length is 9cm? What is the perimeter of this rectangle?

Let’s denote the width of this rectangle through x.

According to the condition of the problem, the length of this rectangle is 9 cm, and its area is 72 cm².

Since the area of ​​any rectangle is equal to the product of the length and width of this rectangle, we can write the following equation:

9 * x = 72.

We solve the resulting equation and find the width of this rectangle:

x = 72/9;

x = 8 cm.

Knowing the length and width of a given rectangle, we find its perimeter P as the doubled sum of the length and width of this rectangle:

p = 2 * (9 + 8) = 2 * 17 = 34 cm.

Answer: the width of the rectangle is 8 cm, the perimeter of the rectangle is 34 cm.



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