What is the volume of a right circular cylinder with a base diameter of 17.5 ft and a height of 24.5 ft?
use 3.14 for pi and round only your final answer to the nearest hundredth.
i don't even really need the answer. if someone could explain to me how to do it, that would be great! i looked up what i was supposed to do and got a coupe different answers. 

What is the vertex form of f(x) = x2 + 6x + 3

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation

Determine if this is a solution to the system