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Make all numerators the same
1/8 A = 2/5 B = 3/4 C
6/48 A = 6/15 B = 6/8 C
A= 48u, C = 8u
Diff between A & C = 48u – 8u = 40u
40u = 80 cm^2
1u = 2 cm^2
Unshaded parts = (48u – 6u) + (8u – 6u) = 44u
44u = 44 x 2 = 88cm^2 (ANS)

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