Answer:
1 inch = 2.54 cm
12.9 inches= 12.9 x 2.54
= 32.766
= 32.8 cm (approximately)
Hope it helps...
Answer: Can't see clearly.
Explanation:
Answer:
(a). The average daily demand of this subdivision is 2444.44 gallon/min.
(b). The design-demand used to design the distribution system is 2444.44 gallon/min.
Explanation:
Given that,
Area = 1100 acres
Number of house in 1 acres = 4
![\text{Number of house in 1100 acres} = 4\times1100](https://tex.z-dn.net/?f=%5Ctext%7BNumber%20of%20house%20in%201100%20acres%7D%20%3D%204%5Ctimes1100)
![\text{Number of house in 1100 acres} = 4400](https://tex.z-dn.net/?f=%5Ctext%7BNumber%20of%20house%20in%201100%20acres%7D%20%3D%204400)
Per house water demand = 800 g/day/house
(a). We need to calculate the average daily demand of this subdivision
Using formula for average daily demand
![\text{average daily demand}=house\times\text{Per house water demand}](https://tex.z-dn.net/?f=%5Ctext%7Baverage%20daily%20demand%7D%3Dhouse%5Ctimes%5Ctext%7BPer%20house%20water%20demand%7D)
![\text{average daily demand}=4400\times800\ gallon/day](https://tex.z-dn.net/?f=%5Ctext%7Baverage%20daily%20demand%7D%3D4400%5Ctimes800%5C%20gallon%2Fday)
![\text{average daily demand}=3520000\ gallon/day](https://tex.z-dn.net/?f=%5Ctext%7Baverage%20daily%20demand%7D%3D3520000%5C%20gallon%2Fday)
![\text{average daily demand}=\dfrac{3520000}{24\times60}\ gallon/min](https://tex.z-dn.net/?f=%5Ctext%7Baverage%20daily%20demand%7D%3D%5Cdfrac%7B3520000%7D%7B24%5Ctimes60%7D%5C%20gallon%2Fmin)
![\text{average daily demand}=2444.44\ gallon/min](https://tex.z-dn.net/?f=%5Ctext%7Baverage%20daily%20demand%7D%3D2444.44%5C%20gallon%2Fmin)
The average daily demand of this subdivision is 2444.44 gallon/min.
(b). We need to calculate the design-demand used to design the distribution system
Using formula for the design-demand
![\text{design demand}=(Q_{max})daily\times\text{fire flow}](https://tex.z-dn.net/?f=%5Ctext%7Bdesign%20demand%7D%3D%28Q_%7Bmax%7D%29daily%5Ctimes%5Ctext%7Bfire%20flow%7D)
![\text{design demand}=1.64\times2444.4\times1000](https://tex.z-dn.net/?f=%5Ctext%7Bdesign%20demand%7D%3D1.64%5Ctimes2444.4%5Ctimes1000)
![\text{design demand}=4008816\ gallon/m](https://tex.z-dn.net/?f=%5Ctext%7Bdesign%20demand%7D%3D4008816%5C%20gallon%2Fm)
Hence, (a). The average daily demand of this subdivision is 2444.44 gallon/min.
(b). The design-demand used to design the distribution system is 2444.44 gallon/min.