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40. BC = 150.32
BC = 4800 / 40 = 120 cm (a)
15. L arsir = L persegi - L 1/2 lingkaran
L persegi = 14.14 = 196
L 1/2 lingkaran = 1/2 . 22/7 . 7. 7 = 77
L arsir = 196 - 77 = 119 (c)
14. A
15. C