tolong guys secepatnya jawabnya ya makasih

k = 2 phi r
k = 2 x 22/7 x 21
k = 2 x 22 x 3
k = 44 x 3
k = 132cm

jarak yang di tempuh
= 132 x 50
= 6.600cm
= 66m

r = 21cm
putaran = 50 Kali

Keliling lingkaran = 2 π r
= 2 × 22/7 × 21
= 132

Jarak = byk putaran × keliling lingkaran
= 50 × 132
= 6600 cm
= 6,6 m