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Verified answer
Kelas 5 MatematikaBab Bangun Datar
Keliling lingkaran = 314
2 x π x r = 314
2 x 3,14 x r = 314
r = 314/6,28
r = 50
Luas = π x r x r
Luas = 3,14 x 50 x 50
Luas = 7.775