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luas 1/4 lingkaran 616 : 4 = 154
luas segitiga 1/2 x 14 x 14 = 98
luas arsiran 154-98 = 56
(1/4 x22/7 x14 x14 =1/4 x 22 x2x14=1/2x11x2x14
=11/2 x2 x14 =11x14 )= 154
196-154=42