The areas of two similar triangles are 49 cm2 and 64 cm2 respectively. The ratio of their corresponding sides is
7:8
We know that the ratio of the areas of two similar triangles is equal to the square of the ratio of their corresponding sides.
(side of first △)2(corr.side of 2nd △)2 = 4964
⇒ Ratio of corr. sides = 7:8.