Find the surface area of this net. square centimeters

ty guys for helping me pass my classes ! <3

Triangle xyz has vertices x(1,3), y(0,0)

Complete the steps, which describe how to find the area of the shaded portion of the circle. find the area of the sector by multiplying the area of the circle by the ratio of the to 360. subtract the area of the triangle from the area of the sector.

Using elimination, what is -4x+2y=-12 4x+8y=-24