Sebuah roda berjari jari 28 cm. jika roda tersebut berputar 400 kali maka jarak yang ditempuh adalah

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Kita cari keliling roda terlebih dahulu.

Lalu jarak yang ditempuh kita bagi dengan keliling roda. Kita samakan dahulu satuan pada jarak yaitu .

Jadi, roda harus berputar sebanyak kali.

Dik :r = 28 cmjumlh putran = 500 kalimaka :K = 2 x π x r = 2 x 22/7 x 28 = 176 cm

jadi jarak y ditempuh = 176 x 500 = 88.000 cm = 880 m

Kell = 2 x pi x r= 2 x 22/7 x 28= 176 cmJarak = putaran x kell= 176 x 500= 88.000 cm= 880 m

= 0,88 km

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