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The shape factor for complete rectangular furnace isWhere a, b and c are the inside dimensions and d x is the wall thicknessa) 2/ d x (a b + b c + c a) + 4 (0.64) (a + b +c) + 8 (0.45) d xb) 2/ d x (a b + b c + c a) + 4 (0.44) (a + b +c) + 8 (0.35) d xc) 2/ d x (a b + b c + c a) + 4 (0.34) (a + b +c) + 8 (0.25) d xd) 2/ d x (a b + b c + c

A. 2/ d x (a b + b c + c a) + 4 (0.64) (a + b +c) + 8 (0.45) d x
B. 2/ d x (a b + b c + c a) + 4 (0.44) (a + b +c) + 8 (0.35) d xc) 2/ d x (a b + b c + c a) + 4 (0.34) (a + b +c) + 8 (0.25) d xd) 2/ d x (a b + b c + c a) + 4 (0.54) (a + b +
C. + 8 (0.45) d xb) 2/ d x (a b + b c + c a) + 4 (0.44) (a + b +c) + 8 (0.35) d xc) 2/ d x (a b + b c + c a) + 4 (0.34) (a + b +c) + 8 (0.25) d x
D. 2/ d x (a b + b c + c a) + 4 (0.54) (a + b +c) + 8 (0.15) d x
Answer» E.


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