What is the volume of the rectangular prism? a. 138 yd^3 b. 63 yd^3 c. 22.5 yd^3 d. 7 yd^3

The answer to this problem would be B. Here are the steps:
So, the dimensions of the prism are: 9,3, and 7.
Multiply them all: 9×3×7=189
Lastly: you multiply 189×1/3=63 yd^3
Incase you are wondering, since each cube is 1/3 in length you multiply that by the volume of the prism.
Hope this helps (:

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Step-by-step explanation: