I got another question pls help

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

What is the sum of the geometric series in which a1 = 7, r = 3, and an = 1,701? hint: cap s sub n equals start fraction a sub one left parenthesis one minus r to the power of n end power right parenthesis over one minus r end fraction comma r ≠ 1, where a1 is the first term and r is the common ratio

The area of each triangle is 7 square units. the surface area of the triangular prism is