# Known bike outside diameter is 70 cm, Xiao-Ming riding a bike co-transfection of 100 weeks, from the

2010-01-29 02:01:46 +0000 #1
Please give me some details, to thank you for the!
2010-01-29 02:13:51 +0000 #2
2010-01-29 02:07:16 +0000 #3
upstairs, if you come out of solution, I would like to know the answer ... do not know if this question is implicit in it is really that simple ... In short I do have dared come out to answer ... Also requests the upstairs pointing
2010-01-29 03:08:51 +0000 #4
1. the first operator circumference of 70 centimeters = 0.7 meters circumference = diameter × π π = 3.14

= 0.7π

2. and then counted every minute of the 100 weeks to go turn the number of m

whether the RPM of 100 weeks, you might mistake the subject of the

= 0.7π × 100 = 219.8 meters to 3. then 25 minutes looking in the city of Jiangyin is

1000 meters to set the number of X

X = 219.8 × 25 = 5495 meters to 1000 meters = 5.495

even up the formula: X = 0.7π × 100 × 25 = 5495 meters to 1000 meters = 5.495

A: Hope in the city of Jiangyin is 5.495 km?