Respuesta :

1) The answer is 4,020
2) The answer is 21.84

ghopk3
1. 67*52 = 3484 
2. 2.8*7.8 = 21.84
3. (9.5+22.5)*8/2 = 128
4. (4*16)+(25-4)(16)(1/2)+(15+25)(10)(1/2) = 432
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