Square metal sheet

Four squares of 300 mm side were cut out from a square sheet metal plate with a side of 0,7 m. Express the fraction and the percentage of waste from the square metal sheet.

Correct result:

f =  0.2653
p =  26.5306 %

Solution:

a=0.7 m b=300 mm m=300/1000  m=0.3 m  S1=a2=0.72=49100=0.49 m2 S2=4 b2=4 0.32=925=0.36  o=S1S2=0.490.36=13100=0.13 m2 f=oS1=0.130.49=1349=0.2653
p=100 f=100 0.2653=130049=26.5306%



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