0.9mm

of rain falls in

45min

on a parking lot that has an area of 1 hectare

(10,000m^(2))

. Runoff begins

10min

after precipitation starts, and ends 15 minutes after precipitation ends.\ Assume: ET is negligible, no infiltration, no detention storage.\ Compute the duration of runoff (in minutes).\ 45\ 50\ 15\ 10

0.9mm of rain falls in 45min on a parking lot that has an area of 1 hectare (10,000m2). Runoff begins 10 min after precipitation starts, and ends 15 minutes after precipitation ends. Assume: ET is negligible, no infiltration, no detention storage. Compute the duration of runoff (in minutes). 45 50 15 10