Answer:
1684.8 cubic units
Explanation:
In oblique cylinder the height (altitude) is measured from the opposite base to the base of the cylinder, but it lies outside. We can find the height using Pythagoras theorem.
h + 7² = 13²
h²= 169 - 49
h² = 120
h = √120
h = 10.95 units
radius = r = 7 units

= 3.14 * 7 * 7 * 10.95
= 1684.8 cubic units