334
10 × 4 × 7 = 280
3 × 3 × 6 = 54
280 + 54 = 334
I multiply 1200 times 5 and yet 6000 because it says what is the height
Answer:
12x-6
Step-by-step explanation:
perimeter= 2l+2w
=2(x+4)+2(5x-7)
=2x+8+10x-14
=12x-6
21
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