The length of a red rectangle is 15cm more than its widthw. A blue rectangle, which is 5cm wider and 2cm shorterthan the red one, has a perimeter of 72cm. Make a sketch of therectangles expressing all dimensions in terms of w. Thenfind the dimensions of each rectagle.

Brandon Monroe

Brandon Monroe

Answered question

2022-08-06

The length of a red rectangle is 15cm more than its widthw. A blue rectangle, which is 5cm wider and 2cm shorterthan the red one, has a perimeter of 72cm. Make a sketch of therectangles expressing all dimensions in terms of w. Thenfind the dimensions of each rectagle.

Answer & Explanation

yassou1v

yassou1v

Beginner2022-08-07Added 14 answers

RED RECTANGLE
Width: W
Length: W + 15
BLUE RECTANGLE
Width: W + 5
Length: W + 13
Perimeter: 72
2(W + 5) + 2(W + 13) = 72
2W + 10 + 2W + 26 = 72
4W + 36 = 72
4W = 36
W = 9
RED RECTANGLE:
Width: (9) = 9
Length: (9) + 15 = 24
BLUE RECTANGLE:
Width: (9) + 5 = 14
Length: (9) + 13 = 22

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