Cylinder-shaped 6293

There is half a liter of water in the cylinder-shaped bottle. The bottle has an inner diameter of 10 cm. What is the area of ​​the wetted part of the bottle?

Correct answer:

S =  2.7854 dm2

Step-by-step explanation:

V=0.5 l dm3=0.5 1  dm3=0.5 dm3 D=10 cm dm=10:10  dm=1 dm  r=D/2=1/2=21=0.5 dm S1=π r2=3.1416 0.520.7854 dm2  h=V/S1=0.5/0.78540.6366 dm  S2=h π D=0.6366 3.1416 1=2 dm2 S=S1+S2=0.7854+2=2.7854 dm2



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