Pipe cross section

The pipe has an outside diameter of 1100 mm, and the pipe wall is 100 mm thick. Calculate the cross-section of this pipe.

Correct answer:

S =  3141.5927 cm2

Step-by-step explanation:

D=1100 mm cm=1100:10  cm=110 cm r1=D/2=110/2=55 cm T=100 mm cm=100:10  cm=10 cm  r2=r1T=5510=45 cm S1=π r12=3.1416 5529503.3178 cm2 S2=π r22=3.1416 4526361.7251 cm2  S=S1S2=9503.31786361.7251=3141.5927 cm2



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