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= 2 x 2
= 4 Cm²
Rumus luas lingkaran = π x r x r
( Jari-jari = 2 x 1/2 = 1 Cm )
= 3,14 x 1 x 1
= 3,14 Cm²
Luas yang diarsir = 0,86 Cm²
Rumus keliling persegi = 4 x sisi
= 4 x 2
= 8 Cm
Rumus keliling lingkaran = π x d
= 3,14 x 2
= 6,28 Cm
Keliling = 8 - 6,28 = 1,72 Cm
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