Answer: B. 62.8 cubic units :)
Answer:
it can be a pain when nobody helps... ur top right is correct
Step-by-step explanation:
heres a screenshot ..
A cube with side length 1 unit is called a unit cube
Parallel line means the same slope
(8-1)/(-17-a)=(1-5)/(a+2)
so a is 18

Positive square root of 0.25 = 0.5
Hope this helps. - M