I am giving all my points and a branleist to the people that answer all this questions

84pi

Step-by-step explanation:

first we have to find the area of the base and the formula for that is pi(radius)squared so the radius is 6, pi(6)^2 which will give us 36pi. Next we have to write the formula for volume which is Base area times height over 3. So 36 times 7 divided by 3 (36x7)/3 we dont implement the pi symbol since we want the answer in terms of pi. 36 times 7 is 252, divided by 3 is 84pi

x=2

Step-by-step explanation:

multiple the parenthesis, add like terms, move the constant and then divide