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33. l¹=2×1,6=3,2 m²
l²=1×0,7=0,7 m²
luas tanah yang ditanami rumput
=3,2-0,7=2,5 m²
34. luas sisi kubus=40²=1600 cm²
luas kubus=6×40²=9600 cm²
luas permukaan=9600-1600=8000 cm