Calculation 81405

Sketch the mesh of a cylinder whose base radius to height ratio is 2 : 3. Calculate the volume and surface of the cylinder if its height is 9 cm (sketch, calculation, answer).

Correct answer:

V =  1017.876 cm3
S =  565.4867 cm2

Step-by-step explanation:

h=9 cm r:h=2:3  r=32 h=32 9=32 9=318=6 cm  S1=π r2=3.1416 62113.0973 cm2  V=S1 h=113.0973 9=1017.876 cm3
S2=2π r h=2 3.1416 6 9339.292 cm2  S=2 S1+S2=2 113.0973+339.292=565.4867 cm2

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