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25.) Luas persegi = sxs = 54x54 = 2916 cm²
Luas 2 segitiga = axt/2 = 19x54/2 = 513 cm² x 2 = 1026 cm²
Luas daerah diarsir = 2916 - 1026 =1890 cm²
26.) Luas lingkaan : π r² = 22/7 x 35² = 22/7 x 1225 = 3850
1 per 5 lingkaran = 3850/5 = 770
Luas bagian diarsir = 3850-770 = 3080 cm²
Klo bner dan mmbntu,, jdikan terbaik ya :) mkasih