Naughty goes to school by bike every day. The outer diameter of the bicycle tire is 60cm It takes him 8 minutes to get to school. Do you know how far the naughty home is from school?
The distance is:
S=πdx150x8
=3.14x60x150x8
=226080cm
=2260.8m
That is, the naughty home is 2260.8m away from the school
I hope I can help you
The outer diameter of a bicycle tire is 70 cm. If the wheel turns 200 cycles per minute, how many meters does the bicycle travel per minute? (the number obtained keeps the whole number)
14 × 70 = 219.8 (CM); one minute can do: 219.8 × 200, = 43960 (CM), = 439.69m, ≈ 440m; answer: this kind of bicycle can do about 440m per minute
The diameter of a wheel is 55cm, the wheel rotates for one circle, and it advances approximately______ m.
14 × 55, = 172.7 (CM), 172.7 cm = 1.727 m; a: about 1.727 m forward