An oil

An oil drum is cut in half. One half is used as a water trough. Use the dimensions; length 82cm, width 56cm to estimate the capacity of the water trough in liters.

Correct result:

V =  101 l

Solution:

l=82 cm dm=82/10  dm=8.2 dm w=56 cm dm=56/10  dm=5.6 dm  h=l/2=8.2/2=4110=4.1 dm r=w/2=5.6/2=145=2.8 dm  V=π r2 h=3.1416 2.82 4.1=101 l



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