The area between the isohyets 45 cm and 55 cm is 100 square km and between 55 cm and 65 cm is 150 square km. The average depth of annua! precipitation over the above basin of 250 square km will be | irrigation water resources engineering Questions

a)    50 cm
b)    55 cm
c)    56 cm
d)    60 cm
Ans: c

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