*HELP ASAP I CAN ONLY DO THIS ONE TIME OR ILL FAIL*

Answer:
A
Step-by-step explanation:
V= BxHxL divided by 2
6x9x21= 1,134
divided by 2 equals 567yd
Answer:
A) 567 yd^3
Step-by-step explanation:
If you need help with formulas you could always look them up. Like triangular prism volume formula