3x to the 2nd power +4y to the 2nd power x=2 y=1 z=-3

Step-by-step explanation:

3(2)^2 + 4(1)^2

3(4) + 4

12+4= 16

Step-by-step explanation:

the battle of gettysburg is considered the "high water mark" of the confederacy because it marked the greatest advance of the confederate forces against the union.

for this case we have that by definition, the surface area of a cylinder is given by:

where:

r: it is the radius of the cylinder

h: it is the height of the cylinder

we can also rewrite it as:

where:

la: it's the lateral area

ba: area of the base

option a