Workers

Workers are digging a jump pit in the schoolyard. The pit has a cuboid shape with a length of 5 m, a width of 20 dm, and a depth of 36 cm. They excavate 0.4 cubic meters of soil an hour. How much time (hours and minutes) is needed to excavate this pit?

Result

x = 9:00 h Wrong answer

Step-by-step explanation:

a=5 m b=20 dm m=20:10  m=2 m c=36 cm m=36:100  m=0.36 m  V=a b c=5 2 0.36=518=3.6 m3 V1=0.4 m3  x=V/V1=3.6/0.4=9=9:00 h



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