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Area of triangle = 0.5 * width * height

So 27 = 0.5 * w * (w-3)

or 54 = w2 - 3w

ie w2 - 3w - 54 = 0

w2 - 9w + 6w - 54 = 0

w(w - 9) + 6(w - 9) = 0

ie (w - 9)(w + 6) = 0

So w = 9 or w = -6

But since w is a width, it must be positive and so w = 9 cm.

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14y ago
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Q: A triangle is 3cm wider than it tall the area is 27cm2find the width?
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