Answer:
(1/2), (3/2)
Step-by-step explanation:
midpoint fomula
(x1+x2)/ 2, (y1+y2)/2
(5-4)= 1 1/2 = (1/2)
(-1+4)=3 3/2=(3/2)
Answer: an endless cylinder with radius 4 mm and centerline
I got 11,304. I don't know if that's right or if it's wrong. Let me check again