Dimensions 6496

We rolled a cylinder shell with a volume of 18 / π dm3 from a rectangle with an area of 6 dm2. Calculate the dimensions of the rectangle.

Correct answer:

a =  12 dm
b =  0.5 dm

Step-by-step explanation:

S=6 dm2 V=18/π=18/3.14165.7296 dm3  S = ab a = 2π r V = π   r2 b  S = 2π r b V = π r2 b V/S = r/2 r=2 V/S=2 5.7296/61.9099 dm  a=2π r=2 3.1416 1.9099=12 dm
b=S/a=6/12=21=0.5 dm b1=π r2V=3.1416 1.909925.7296=21=0.5 dm b1 = b



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