Question 1062061
A rectangular room must have a perimeter of 20 feet and an area of at least 20 square feet. Describe the possible widths of the room. Round your answers to the nearest tenth of a foot
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L + W = 10 --> W = 10 - L
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L*W >= 20
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Solve L*W = 20
L*(10 - L) = 20
-L^2 + 10L - 20 = 0
*[invoke solve_quadratic_equation -1,10,-20]
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L =~ 2.8 feet
W =~ 7.2 feet
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Neither L nor W can be less than 2.8 feet (to the nearest 10th)