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Hitunglah luas dan keliling lingkaran jika diketahui ukuran dia meternya a.20 b.12

Rani Maharani

Soal

Hitunglah luas dan keliling lingkaran jika diketahui ukuran dia meternya

a.20

b.12

Pembahasan

Luas = πr² = 3.14 x 10² = 314 m²

Luas = πr² = 3.14 x 6² = 113.04 m²

Keliling = 2πr = 2 x 3.14 x 20 = 125.6 m

B. Keliling = 2πr = 2 x 3.14 x 12 = 75.36 m

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