The ratio of the lengths of corresponding parts in two similar solids is 2: 1. what is the ratio of their surface areas?

Need ! give step by step solutions on how to solve number one [tex]\frac{9-2\sqrt{3} }{12+\sqrt{3} }[/tex] number two [tex]x+4=\sqrt{13x-20}[/tex] number three (domain and range) [tex]f(x)=2\sqrt[3]{x} +1[/tex]

Which of the following transformations will always produce a congruent figure?

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?