1. y = -1/2 + 2.
2. y= 2/5x - 4/5
Your answers are a and d hope this helps
70.6 what i got was 70.6753275399
That looks hard... I can see the attachment tho<span />
Consider this option:
Volume is 256π/5, area is 32/3.
Details are in the attachment.
P.S. intersection points are (-2;4) and (2;4).