[tex]\huge{ \mathbf{ \underline{ Answer }\: \: ✓ }}[/tex]
The sand we need to fill the cylinders is equal to the total volume of the six cylindrical posts .
Given terms ( common for each cylinder ) :
- height (h) = 4 ft
- radius. (r) = 0.5 ft
[tex] \large \boxed{ \mathrm{volume =\pi {r}^{2} h}}[/tex]
- [tex]3.14 \times \dfrac{1}{2} \times \dfrac{1}{2} \times 4[/tex]
- [tex] \mathrm{3.14 \: ft {}^{3} }[/tex]
Since volume of each cylinder is equal, so total volume of six cylindrical post :
- [tex] { \mathrm{18.84 \: ft {}^{3} }}[/tex]
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