SOLUTION: The length of a rectangular block is three times its width. The surface area is 300cm^2. If the width of the block is xcm, calculate the dimensions of the box.

Question 1031496: The length of a rectangular block is three times its width. The surface area is 300cm^2. If the width of the block is xcm, calculate the dimensions of the box.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The length of a rectangular block is three times its width. The surface area is 300cm^2. If the width of the block is xcm, calculate the dimensions of the box.
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L = 3*W
SA = 2[L*W + L*H + W*H]
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(3W*W) + 3HW + W*H = 150
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3W^2 + 4HW - 150 = 0
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3x^2 + 4Hx - 150 = 0
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Question:: What is the height of the block??
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Cheers,
Stan H.
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