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L.persegi panjang - L.1/2 lingkaran
12 . 6 - 1/2 . 3,14 . 6 . 6 =
72 - 56,52 = 15,48 cm2
2. Sudut MKL = 180 - 60 - 65
= 55
Sudut MOL = 2.Sdt Mkl
= 110drajat