Find the surface area of the right triangular prism

Teams of 4 are competing in a 1/4 mile relay race. each runner must run the same exact distance. what is the distance each teammate runs?

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.