№. 1
Banyak putaran = n
Panjang lintasan yg ditempuh mobil
= n × keliling roda
= n × πd
= n × 22/7 × 84
= 264n cm ✔
№. 2
1 menit = 90°/15 = 6°
25 menit = 25 × 6° = 150°
Panjang lintasan jarum menit selama 25 menit
= 150°/360° × keliling
= 5/12 × 2 × 3,14 × 20
= 314/6
= 52,33 cm
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№. 1
Banyak putaran = n
Panjang lintasan yg ditempuh mobil
= n × keliling roda
= n × πd
= n × 22/7 × 84
= 264n cm ✔
№. 2
1 menit = 90°/15 = 6°
25 menit = 25 × 6° = 150°
Panjang lintasan jarum menit selama 25 menit
= 150°/360° × keliling
= 5/12 × 2 × 3,14 × 20
= 314/6
= 52,33 cm