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The diameter of a circular sewer is 0.8m. The desired depth of flow is __________
  • a)
    2/3 of the circular section of sewer
  • b)
    1/3 of the circular section of sewer
  • c)
    1/2 of the circular section of sewer
  • d)
    1/4 of the circular section of sewer
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The diameter of a circular sewer is 0.8m. The desired depth of flow is...
When the diameter of the sewer is between 0.4m and 0.8m, they are designed to flow at 2/3 depth.
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The diameter of a circular sewer is 0.8m. The desired depth of flow is...
The desired depth of flow in a circular sewer can be determined based on the diameter of the sewer.

Given:
Diameter of the circular sewer = 0.8m

To find the desired depth of flow, we need to calculate the area of the circular section of the sewer.

1. Calculating the radius:
The diameter is given as 0.8m, and we know that the radius is half of the diameter. Therefore, the radius can be calculated as follows:
Radius = Diameter/2 = 0.8m/2 = 0.4m

2. Calculating the area of the circular section of the sewer:
The area of a circle can be calculated using the formula:
Area = π * radius^2

Substituting the value of the radius:
Area = π * (0.4m)^2
Area = 0.16π m^2

3. Finding the desired depth of flow:
The desired depth of flow is the fraction of the circular section of the sewer. According to the options given, the correct answer is option 'A' which states that the desired depth of flow is 2/3 of the circular section of the sewer.

So, the desired depth of flow can be calculated as follows:
Desired depth of flow = 2/3 * Area

Substituting the value of the area:
Desired depth of flow = 2/3 * 0.16π m^2

Simplifying the expression:
Desired depth of flow = (2/3) * (0.16π) m^2
Desired depth of flow = 0.10667π m^2

Therefore, the correct answer is option 'A' which states that the desired depth of flow is 2/3 of the circular section of the sewer.
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The diameter of a circular sewer is 0.8m. The desired depth of flow is __________a)2/3 of the circular section of sewerb)1/3 of the circular section of sewerc)1/2 of the circular section of sewerd)1/4 of the circular section of sewerCorrect answer is option 'A'. Can you explain this answer?
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