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in the above triangle ABC AB = 4m and AC (shadow) = 20 m

similarly in triangle PQR PQ (tower ) and QR = 120 its Shadow

since both the triangles are similar therefore ratio of their corresponding sides will be same ; as follows

PQ/QR = AB/AC

now we can substitute values as follows

PQ/120 = 4/20

solving we get PQ = 120/5 = 24 m (Answer)

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Aug 3rd, 2015

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