Sides Of 2nd Traingle are 4,7,8
Shortest side of 2nd Triangle is 4 cm
Shortest side of 1st Triangle is 6cm
Ratio of 1st to 2nd 6/4 = 3/2
Since Triangles are Similar...Sides are in the same ratio
Therfore the other sides of Triangle are 3/2 x 7 = 21/2 = 10.5 cm
3/2 x 8 = 12 cm