Answer:
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1. 50-x
2. 2x+189
3. x+109
4. x+99
5. x*(76-39)
6. 75+x
7. 45-3x
8. 2x+15
9. 3x-25
10. x*(x+88)
Step-by-step explanation:
3003 units^3.
Just multiply the dimensions :
11 * 13 * 21
= 143 * 21
= 3003 units^3.
its 10 i think