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L. Persegi panjang = 540
Luas daerah = 540 + 540 = 1080 cm^2 (c)
Luas persegi panjang = 12 x 45 = 540 cm2
Luas bangun = 1080 cm2
26. Luas juring = 45/360 x 22/7 x 14 x 14 = 77 cm2