59_Problem CHAPTER 9 - PROBLEM 9.54 CONTINUED Centroid X =0...

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PROBLEM 9.54 CONTINUED Centroid: 0 X = Ay Y A Σ = Σ or ( ) ( ) ( ) ( ) ( ) ( ) ( ) 2 2 2 2 2 2 2 2 1.44 in 27 in. 0.84 in. 2 4.75 in 0.987 in. 21.6 in 13.5 in. 2 1.44 in 4.75 in 21.6 in Y + + = + + 3 2 376.31in 11.0745 in. 33.98 in = = Now ( ) ( ) ( ) 1 3 2 2 2 x x x x I I I I = + + ( ) ( ) 2 2 4 4 2 6.25 4.75 11.075 0.987 in 2 1.24 1.44 27 0.842 11.075 in = + + + ( ) 2 4 1312.2 21.6 13.5 11.075 in + + ( ) ( ) 4 4 4 4 2 489.67 in 2 328.84 in 1439.22 in 3076.24 in = + + = or 4
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