The ratio of the lengths of corresponding parts in two similar solids is 5: 1,
what is the ratio of their surface areas

The ratio of the surface areas of two similar solids can be computed by squaring the given ratio of the corresponding sides. For this given,
                                r = (5:1)^1
                               r = 25:1

Thus, the ratio of the surface areas of the similar solids is 25:1. 

Od. 130 degrees because if you add them together you get the 130