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Digiron [165]
3 years ago
10

Find the area of a rectangle having a perimeter of 182 yards and a width 20 yards shorter than twice its length

Mathematics
1 answer:
Studentka2010 [4]3 years ago
3 0
Let the length be l in this equation.

We know that the perimeter of a rectangle is w2 + l2 = P

Width is defined in terms of length, so we know w = l2 - 20

We can substitute this value of w into the formula for perimeter to find the length.

(l2 - 20)2 + l2 = 182

l4 - 40 + l2 = 182

l4 + l2 = 222

l6 = 222

l = 37

So the length is 37. Now that we've found the length, we can go back to the Perimeter formula again and find width.

w2 + (37)2 = 182

w2 + 74 = 182

w2 = 108

w = 54

Width is 54. Now with both of these values found, we can calculate area with the formula l * w = A

37 * 54 = A

1998 = A

So the area of the rectangle is 1998 yards^2.
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