How many hectoliters of water is in a garden barrel with a 90 cm diameter and a height of 1.3 m if it is filled to 80% of its capacity?

Correct answer:

V =  6.6162 hl

Step-by-step explanation:

D=90 cm dm=90:10  dm=9 dm r=D/2=9/2=29=4.5 dm h=1.3 m dm=1.3 10  dm=13 dm  V1=π r2 h=3.1416 4.52 13827.0243 l  V=V1/100 0.80=827.0243/100 0.80=6.6162 hl

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