another algebra word problem
posted by nicole .
okay guys, just one more word problem. and i don't think this one has any typos in it:
The perimeter of a rectangle is 27 cm and its area is 35 square centimeters. Find the length and the wide of the rectangle.
i just need help getting it started...
Ok P=27cm where P is the perimeter. A = 35cm^2 where A is the area.
We know that A =L*W and P=2(L+W) thus we have
(1) 35=L*W
(2) 27=2(L+W)
From (1) we have 35/L = W. Use this in (2) to get
27=2(L + 35/L) Now solve for L. This is a quadratic equation.
thanks a lot. i had been trying to do this for a long time :)
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