davidinark

Not a typo. The book says 230 blades in 4 square inches. This is what I came up with (may not be right): X = # blades in 1 sq in (X*4)+10 = 230 (blades in 4 sq in) I surmised that (X*2)+5 = # blades in 2 inches Therefore, (X*3)+7.5 = # Blades in 3 sq inch...