Percentage 67494

A circle with the maximum area was made of a square plate with side a = 85 cm. What percentage of the board is wasted?

Correct answer:

p =  21.4602 %

Step-by-step explanation:

a=85 cm r=a/2=85/2=285=42.5 cm  S1=a2=852=7225 cm2 S2=π r2=3.1416 42.525674.5017 cm2  p=100 S1S1S2=100 722572255674.5017=21.4602%



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