Determine the length of the rectangle. Let the length of the rectangle be a, then the width of the rectangle will be a – 10. Make the equation:
(a + a – 10) x 2 = 140;
(2a -10) x 2 = 140;
4a – 20 = 140;
4a = 140 + 20;
4a = 160;
a = 160: 4;
a = 40 m.
Determine the width of the rectangle:
40 – 10 = 30 m.
Answer: the length of the rectangle is 40 meters, the width of the rectangle is 30 meters.
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