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The areas of two similar triangles ΔABC and ΔPQR are 36 sq cms and 9 sq cms respectively. If PQ = 4 cm then what is the length of AB (in cm)?
For similar triangles
Ratio of sides = $$\sqrt{ \text(ratio of areas)}=\sqrt{36:9}=2:1$$
AB/PQ = 2/1
AB/4 = 2/1
AB = 8
So the answer is option C.
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