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प्रश्न
In ΔABC and ΔDEF, we have `(AB)/(DE) = (BC)/(EF) = (AC)/(DF) = 5/7`, then ar(ΔABC) : ar(ΔDEF) = ?
पर्याय
5 : 7
25 : 49
49 : 25
125 : 343
MCQ
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उत्तर
25 : 49
Explanation:
The triangles are similar corresponding sides in ratio 5 : 7.
The ratio of areas of similar triangles equals the square of the ratio of corresponding sides, so `ar(ΔABC) : ar(ΔDEF) = (5/7)^2 = 25 : 49`.
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