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k = 22/7.84
k = 264cm
jarak = 132m = 13200cm
banyak putaran = jarak/kel lingkaran 13200/264 = 50kali putaran (a)
r = 42 cm
K = 132 m = 13200 cm
n = ?
K = n (2πr)
13200 = n (2 . . 42)
13200 = 264 n
n = 50
jadi, roda berputar sebanyak 50 kali , jawaban (A)
semoga membantu :) jadikan yang terbaik ya :))