Calculate the volume of the silo in m³.

$$\text{Side length} (s) = 17.5 \text{ m}$$ $$\text{Volume of square silo} = s \times s \times h$$ $$\text{Volume of square silo} = 17.5 \text{ m} \times 17.5 \text{ m} \times 35 \text{ m}$$ $$\text{Volume of square silo} = 10718.75 \text{ m}^{3}$$

$$\text{Diameter} (D) = 17.5 \text{ m}$$ $$\text{Radius} (r) = \frac{D}{2} = \frac{17.5 \text{ m}}{2} = 8.75 \text{ m}$$

$$\text{Volume of cylindrical silo} = \pi \times r^{2} \times h$$ $$\text{Volume of cylindrical silo} = 3.142 \times (8.75 \text{ m})^{2} \times 35 \text{ m}$$ $$\text{Volume of cylindrical silo} = 3.142 \times 76.5625 \text{ m}^{2} \times 35 \text{ m}$$ $$\text{Volume of cylindrical silo} = 8419.065625 \text{ m}^{3}$$

$$\text{Total Volume} = \text{Volume of square silo} + 4 \times \text{Volume of cylindrical silo}$$ $$\text{Total Volume} = 10718.75 \text{ m}^{3} + 4 \times 8419.065625 \text{ m}^{3}$$ $$\text{Total Volume} = 10718.75 \text{ m}^{3} + 33676.2625 \text{ m}^{3}$$ $$\text{Total Volume} = 44395.0125 \text{ m}^{3}$$

The volume of the silo is $\boxed{44395.0125 \text{ m}^{3}}$.

3.2.2

$$\text{Radius} (r) = 8.75 \text{ m}$$ $$\text{Height} (h) = 35 \text{ m}$$ $$\pi = 3.142$$

$$\text{Surface Area} = 2 \times \pi \times r^{2} + 2 \times \pi \times r \times h$$ $$\text{Surface Area} = 2 \times 3.142 \times (8.75 \text{ m})^{2} + 2 \times 3.142 \times 8.75 \text{ m} \times 35 \text{ m}$$

$$\text{Surface Area} = 2 \times 3.142 \times 76.5625 \text{ m}^{2} + 2 \times 3.142 \times 306.25 \text{ m}^{2}$$ $$\text{Surface Area} = 481.0625 \text{ m}^{2} + 1924.25 \text{ m}^{2}$$ $$\text{Surface Area} = 2405.3125 \text{ m}^{2}$$

The surface area of one cylindrical silo is $\boxed{2405.3125 \text{ m}^{2}}$.