The perimeter of the rectangle is 36 cm, the area of the rectangle is 72 cm2. What is the width if the length is 2 times the width?

1. Let’s say the width of the rectangle is x centimeters. Then its length is x * 2 = 2x centimeters.
2. Determine the width of the rectangle if its a) perimeter – 36 centimeters, b) area 72 cm².
a) 36 = (x + 2x) * 2;
36/2 = x + 2x;
18 = 3x;
x = 18/3 = 6 centimeters.
b) x * 2x = 72;
2x² = 72;
x = √72 / 2 = √36 = 6 centimeters.
Answer: The width of the rectangle is 6 centimeters.