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b. 3,14 × 60 = 188,4
c. 3,14 × 30 × 30 = 2,826
5.dibagi 2 menjadi bangun persegi & persegi panjang
Luas persegi = 2×2×2×2 = 16m^2
Luas p.panjang = 2 × ( 2 + 6 ) = 2 × 8 = 16 m^2
Luas gabungan kedua bangun = 16 + 16 = 32 cm^2 ( 32 m persegi )