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A rectangle has a length that is three times the width . The perimeter of the rectangle is 40 feet.what is the area of the rectangle
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A rectangle has a length that is three times the width . The perimeter of the rectangle is 40 feet.what is the area of the rectangle
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Mathematics
6 months
2021-08-31T09:57:06+00:00
2021-08-31T09:57:06+00:00 1 Answers
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Answer:
The area is 15 feet
Step-by-step explanation:
So you are going to need two different equations-
l = w(3)
2l + 2w = 40
Insert the first equation into the second-
2(3w) + 2w = 40
Simplify this equation-
6w + 2w = 40
8w = 40
Divide both sides by 5
w = 5
Solve first equation
l = 5(3)
l = 15
Then find the area-
5 x 15 = 75