What is the volume of the cylinder below

V =2160 pi units^3

Step-by-step explanation:

The volume of a cylinder is given by

V = pi r^2h

We know the radius is 12 and the height is 15

V = pi (12)^2 (15)

V = pi 144*15

V =2160 pi units^3

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

more detail

step-by-step explanation: