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ivanzaharov [21]
3 years ago
6

The area of a rectangular wall of a barn is 110110 square feet. its length is 1212 feet longer than twice its width. find the le

ngth and width of the wall of the barn.
Mathematics
1 answer:
Lerok [7]3 years ago
4 0
A = l x w
l = 1212 + 2w 
110,110 = (1212 + 2w)w
110,110 = 1212w + 2w^2
0=2w^2+1212w-110,110
Use quadratic formula: w = -1212+ \sqrt{1212^2-4(2)(-110,110)} =80.228
You don't need the negative value of the quadratic formula since it's asking for area.
Plug in 80.228 into l = 1212 + 2w
l = 1212 + 2(80.228) = 1372.456
To double check, 1372.456 x 80.228 = 110,109.4 or about 110,110

So, width = 80.228 and length = 1372.456
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