C is the correct answer. An equilateral triangle is a type of triangle.
Answer:
20
Step-by-step explanation:
Answer:
396 
Step-by-step explanation:
Okay, so first we will find the triangle area.
9 * 8 = 72/2 = 36.
Now multiply this by 11 (the width of the prism)
36 * 11 = 396 
Answer:
5/2
Step-by-step explanation:
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