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Verified answer
Jarak = 3.520m = 352.000cmPutaran = 1000
Keliling = ?
Jawab
Jarak = keliling x putaran
352.000cm = keliling x 1000
352.000cm/1.000 = keliling
352 cm = keliling
keliling = π x d
352 cm = 22/7 x d
352(7) cm = 22 x d
2464 cm = 22 x d
2464cm/22 = d
112cm= d
112/2 cm = r
56 = r
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Verified answer
Mapel : matematikaMateri : keliling bangun datar
Kata kunci : keliling lingkaran
Level soal : level 2, pengaplikasian
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Jawaban
Panjang lintasan = keliling lingkaran × banyak berputar
keliling lingkaran = panjang lintasan ÷ banyak berputar
keliling lingkaran = 3.520 ÷ 1.000
keliling lingkaran = 3,52 m
Keliling lingkaran
K = 2πr
r = K ÷ 2π
r = 3,52 ÷ (2 × 22/7)
r = 3,52 ÷ 44/7
r = 3,52/1 × 7/44
r = 24,64/44
r = 0,56 m atau
r = 56 cm
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