Jawabanmu

2014-06-16T19:53:08+07:00
K = π*d
    = 22/7 * 126
    = 396
Jarak yg ditempuh = 396*400 = 158.400 cm
2014-06-16T19:53:59+07:00
Diameter = 126 cm
jari" = 126 : 2 = 63 cm

keliling roda =  \pi d
= 22/7 x 126
=396 cm

jarak yang ditempuh 396 x 400 putaran = 158400 cm

158400 : 100000 = 1,584 km / 1,6 km

maaf kalo salah