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1/2 x 32 1/2 x 10 1/2 = 1/2 x 65/2 x 21/2
= 1365/8
=170 5/8
b. luas FGH
FGH = EFG
FGH = 170 5/8
c. jumlah EFG &FGH
EFG + FGH = 170 5/8 + 170 5/8
= 340 10/8
= 340 5/4
Maaf. sementara untuk yang nomer 1 dulu ya