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Please help ! ( see image !)

Please help ! ( see image !)-example-1
User Molholm
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5) area of one square= 25cm^2
So area of net (six squares) =25x6 =150cm^2
6) net= 300cm^2
six squares are wasted = 150cm^2
150cm^2/300cm^2= 50%
User Xerillio
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