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Question Number 69545 by TawaTawa last updated on 24/Sep/19

Commented by mr W last updated on 24/Sep/19

$$30\times 20-28\times 18=96m^2$$$$96\times 0.08=7.68m^3$$$$\frac{7.68}{1}=7.68\Rightarrow 8bags$$$$8\times 600=4800N$$$$4800+2000=6800N$$$$\frac{6800}{96}=70.83N/m^2\approx 70N/m^2\Rightarrow correct$$

Commented by TawaTawa last updated on 24/Sep/19

$$\mathrm{Wow},\mathrm{God}\mathrm{bless}\mathrm{you}\mathrm{sir}$$

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