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Airflow tube simplified
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Electricity basics
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Heating of fluids
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Insulation of buildings
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Unit conversion
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Wind load
Surface area of a tube and speed
Formula: A = π * r²
r (in m):
Clear
d (in m):
Clear
A (in m²):
Clear
Calculate
Formula: Q = A * v
A (in m²):
Clear
v (in m/s):
Clear
Q (in m³/s):
Clear
r (in m) only output:
Clear
Calculate
Formula: Q in h = Q * 3600
Q (in m³/s):
Clear
Q (in m³/h):
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Calculate