Given Triangle GHI and Triangle JKL. GH = 4cm, JK = 6cm. If the area of Triangle JKL = 27cm2 what is the area of Triangle GHI?
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I suspect you haven't given the whole question here.
My suspicion is that you are given (a) that the triangles are similar, and (b) that the line GH on the one triangle corresponds to line JK on the other one, or some such.
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