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Need help with math. Need now

Need help with math. Need now-example-1

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Answer:

Explanation:

the volume of top triangular prism :

(16x21)/2x15=2520 yd^3

the volume of bottom:

22x16x15=5280 yd^3

so the volume of the figure:

2520+5280=7800 yd^3

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