(1,3),(4,1),(2,0),(2,2),(3,4),(0,5) does this graph represent a function?

Acircle has a circumference of 2 pi cm. which statement about the circumference and area is true? a comparison of the area and circumference is not possible since the area cannot be determined. the numerical values of the circumference and area of the circle are equal. the numerical value of the circumference is greater than the numerical value of the area. the numerical value of the circumference is less than the numerical value of the area.

Can someone me with this? i’m not sure what to put for my equations.

Which angle has the same measure as the dehedral angle formed by the orange face and the purple rectangle