roda sebuah bacak berdiameter 70 cm becak tersebut menempuh lintasan sepanjang 132m berapa kali roda becak tersebut berputar

s = n × K
s = n × phi × d
13200 cm = n × 22/7 × 70 cm
n = 13200/220
n = 60 putaran

Keliling Roda Becak
= phi x d
= 22/7 x 70
= 220 Cm

Panjang lintasan = 132m = 13,200cm

Putaran roda becak
= 13,200/220
= 60 kali