Aluminum 72964

The aluminum disc has a diameter of 96 mm. 10 discs are cut from a sheet metal sheet 1 m long and 10 cm wide. What% is waste?

Correct answer:

p =  27.6 %

Step-by-step explanation:

d=96 mm cm=96:10  cm=9.6 cm a=1 m cm=1 100  cm=100 cm b=10 cm n=10  S1=π (d/2)2=3.1416 (9.6/2)272.3823 cm2 S2=n S1=10 72.3823723.8229 cm2  S3=a b=100 10=1000 cm2  p=100 S3S3S2=100 10001000723.8229=27.6%



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