What is the surface area of this design? 5 in.
5 in.
490 ina
8 in.
440 in?
600 in2
2 in.
560 in
10 in.
10 in.
A

Parabolas y=−2x^2 and y=2x^2+k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.