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=12*8+8*3/2
=96 + 12 =108
maka luas tanah sebenarnya =108*150/100=162 m2
12 cm x 150 = 1800 cm = 18 m
15 cm x 150 = 2250 cm = 22,5 m
8 cm x 150 = 1200 cm = 12 m
luas sebenarnya
(12+15):2 x 8 = 13,5 x 8 = 108 m persegi