HELP I need to find the surface area for each one, and tbh I don’t really know how, and if you do want to help me can you pls explain how you got the answers and everything you used to get them, so I can understand it because I have more of these.

What is the exact volume of the cylinder? 16in going into the middle of the top of the cylinder and 40in in height a) 25,600(pi)3 b)10,240(pi)3 c)1280(pi)3 d)640(pi)3

Renita analyzed two dot plots showing the snowfall during the winter months for city a and for city b. she found that the median snowfall is 5 inches less in city a than in city b. the mean snowfall is about 2 inches less in city a than in city b. which explains why there is a difference in the measures of center for the sets of data?

Select the quadratic that has root x = 8 and x = -5