The length of the rectangle is 5/8 of its width. Find the sides of a rectangle if its area is 40 cm2.
September 15, 2021 | education
| To find the area, you need to multiply the length by the width. however, the area is already known. Let’s display the length and width. Let’s say width = “x”, then length = “5 / 8x”.
Let’s draw up an equation based on the area formula:
x * 5 / 8x = 40;
5 / 8x ^ 2 = 40;
x ^ 2 = 40: 5/8;
x ^ 2 = 40 * 8/5;
x ^ 2 = 40: 5 * 8 = 64;
x = 8 (cm) – width.
Length – 5/8 * 8 = 5 (cm).
Answer: width – 8 cm, length – 5 cm.
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