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Kelas 8 MatematikaBab Lingkaran
Jawaban :
Luas juring
7.850 = α/360° × π r²
7.850 = 90°/360° × π r²
7.850 = 1/4 × 3,14 × r²
r = √ 7.850 / ( 1/4 × 3,14 )
r = √ 7.850 / ( 0,785 )
r = √ 10.000
r = 100 cm
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➡️Mata Pelajaran: Matematika➡️Bab: Bangun Datar
➡️Kata Kunci: Lingkaran
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