Answer:
this is your answer. thanks!!
It would be c because when you multiply each number by r you can see the number
Answer:
I'm pretty sure it is (a)

Hence,

is cutting each other in this equation.
So,

can be of any value.i.e.,infinite.
Hope this will help you.
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Answer:
864 cubic meters
Step-by-step explanation:
Rectangular prism = 5x9x12=540
Triangular prism = 1/2(9)(6)(12)=324
540+324=864 cubic meters