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B1 = Seperemapat lingkaran
B2 = segitiga sama sisi
B1 = (π * r²)*1/4
B1 = (22/7 * 10²)1/4
b1 = 314 / 4
B1 = 78.5
B2 = 1/2* Alas * Tinggi
B2 = 1/2 * 10 * 10
B2 = 50
B1 + B2 = Total Luas
78.5 + 50 = 128.5
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