Arrange the parabolas represented by the equations to the positions of their foci on the coordinate plane, starting with the farthest left and ending with the farthest right

step-by-step explanation:

for volume, add base x height x width

180°

step-by-step explanation:

sum of equilateral triangle=180°

< n=60°

< m=120°°[angle supplementary of equilateral angle]

< m+< r+< x=360°(sum of exterior angle of triangle)

the answer would be c