Answer:
189.15cy
Explanation:
To understand this problem we need to understand as well the form.
It is clear that there is four wall, two short and two long.
The two long are [tex]\rightarrow 120ft5in+2(10ft)[/tex]
The two long are [tex]\rightarrow 122ft1in=122.08ft[/tex]
The two shors are [tex]\rightarrow 86ft4.5in = 86.375ft[/tex]
The height and the thickness are 14ft and 0.83ft respectively.
So we only calculate the Quantity of concrete,
[tex]Q_c = [(2*122.08)+(2*86-375)]*14*0.833\\Q_c=4864.02ft^3[/tex]
That in cubic yards is equal to [tex]180.15 (1cy=27ft^3)[/tex]
Hence, we need order 5% plus that represent with the quantity
[tex]Q_{ordered}=1.05*180.15=189.15cy[/tex]
