The "system" of equations can't be solved for (x, y), because there's no "system" of equations given. There's really only one equation.
Either of these two equations can be massaged to look exactly like the other one. And if you graph both equations, you find that they're both the same line on the graph.
ANY point on the line is a solution to both equations ... and we all know how many different points there are on a line.
C=2pir 20pi=2pir 20pi/2pi=2pir/2pi R=10 Height=10/2=5 Two circles surface areas is 2*pir^2 2pi10^2 2*100pi 200pi The cylindrical part is 2pirh 2pi*10*5 100pi Add 100pi+200pi=300pi
