Percentage 66714

They cut a full circle from a square plate with a side of 200 mm. What percentage is waste?

Correct answer:

p =  21.4602 %

Step-by-step explanation:

a=200 mm r=a/2=200/2=100 mm  S1=a2=2002=40000 mm2 S2=π r2=3.1416 100231415.9265 mm2  p=100 S1S1S2=100 400004000031415.9265=21.4602%



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