Can you tell me if i'm solving for volume of a pipe right?

Question

A 36 inch pipe that is 1 mile long = _____________ cubic feet?

.785xD^2XLength, is that the right formula for the volume on this?

so .785 x 3FT x 3FT x 5,280FT(1mile) which would give me 37,303FT^3

I'm taking my California water distribution grade 2 liscense test in 10 days and i'm just brusing up on studies again and i may need this because volume could be a factor in one of my equations.

Como · Answer

If diameter is 36 ins then radius is 18 ins = 1•5 ft
V = π  r²  h
V = π x 1•5²  x 5280 ft ³
V = 37322 ft ³

? · Answer

The formula you are using is
.785 D² L

.785 ≈ π/4

π/4 D² L = π (D/2)² L = πr² L

So this is an equivalent way of calculating the cross sectional area.

A = πr² = π/4 D²

DWRead · Answer

diameter = 36" = 3 ft
radius r = 1.5 ft
area of circular cross-section of pipe = πr² = 2.25π ft²

length L = 1 mile = 5280 ft
volume = πr²L = 2.25π·5280 = 11,800π ≅ 11,880·3.14 = 37,303.2 ft³

Trending News

Can you tell me if i'm solving for volume of a pipe right?

3 Answers