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Question 93
∆ABC is similar to ∆PQR. If ratio of perimeters of ∆ABC and ∆PQR is 1:2 and if PQ = 10 cm then what is the length of AB (in cm)?
Solution
For similar triangles, ratio of perimeters = ratio of corrosponding sides
PQ/AB = 2/1
10/AB = 2/1
AB = 5
So the answer is option A.
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