Keliling lingkaran = 2r
628 = 2. 3,14. r
628 = 6,28 r
100 = r
Luas lingkaran = r²
Luas lingkaran= 3,14. (100)²
Luas lingkaran = 31400 cm²
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Keliling lingkaran = 2r
628 = 2. 3,14. r
628 = 6,28 r
100 = r
Luas lingkaran = r²
Luas lingkaran= 3,14. (100)²
Luas lingkaran = 31400 cm²