The areas of two similar triangles are 49 cm2 and 64 cm2 respectively. The ratio of their corresponding sides is ____.
The ratio of areas of two similar triangles is equal to ratio of squares of corresponding sides.
4964=(Side of first 1st triangle)2(Corresponding side of 2nd triangle)2
78=Side of first 1st triangleCorresponding side of 2nd triangle
⇒ Ratio of corresponding sides =7:8