15 POINTS FOR FULL ANSWER

6 ft

Step-by-step explanation:

Volume of a prism:

= base area×height

Using pythagoras theorem, find the length (let's call it t) of the other leg of the triangle (base)

17² = 8² + t²

289 = 64 + t²

t² = 225

t = 15 ft

Volume = Base area × height

360 = (½×8×15)×x

360 = 60x

x = 6 ft

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step-by-step explanation:

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.