The areas of two equilateral triangles are in the ratio 25:36. Their altitudes will be in the ratio  (a) 25:36 (b) 36:25 (c) 5:6 (d)

Question ID - 50109 :- The areas of two equilateral triangles are in the ratio 25:36. Their altitudes will be in the ratio  (a) 25:36 (b) 36:25 (c) 5:6 (d)

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Length of each triangles be altitudes

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And,

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At a given instant, say t = 0, two radioactive substance A and B have equal activities.  The ratio   of their activities after time t itself decays with time t as e−34 .  If the half-life of A is m2 , the half-life of B is

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