Volume.....m3 waktu 120 menit debit 690m3/menit

Jawab :

120 : 60 = 2

V = d x w
= 690 x 2 
= 1,380m^3

waktu=120menit
debit=690m3/menit
volume=debit×waktu
= 690m3/menit×120 menit
=82.800 m3