IS THE ANSWER C 162 ?? someone check me please this is triangular prism correct??? I did 1/2 × 6×3×18 but someone else got 243 and I don't know I don't want to chance it help!

Answer:
the answer is c 162
Step-by-step explanation:
formula for triangular prism: 1/2*b*h1*h2
substitute the values into the formula:
6*3*18=324
324/2=162
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