The rate of rainfall for successive 10 minute periods of a 60 minute d – McqOptions

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1.	The rate of rainfall for successive 10 minute periods of a 60 minute duration storm, are shown in the below figure. If the value of φindex is 3 cm/hour, the run off will be
A.	2 cm
B.	3 cm
C.	4 cm
D.	5 cm.
Answer» C. 4 cm

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