The perimeter of the rectangle is 24 cm. The length of the rectangle is twice its width. Calculate the length and width of this rectangle.

univerkov | December 2, 2020 | education

Let x be the width of the rectangle
Then 2x the length of the rectangle
It is known that the perimeter of a rectangle is 24 cm
P = 2 (a + b)
P = 2 (2x + x)
P = 4x + 2x
make up the equation:
1) 4x + 2x = 24
6x = 24
x = 24: 6
x = 4 (cm) -the width of the rectangle
2) 4 * 2 = 8 (cm) -the length of the rectangle
answer: 4 cm width, 8 cm length

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