frankie10 wrote:there is 100 cm in 1 meter. 150cm = 1.5m 1.5 * 400 = 600
I'm not sure what you're calculating here...? Since "1.5" stands for the meters in one stride-length, and since "400" stands for the number of meters in the race, you have calculuated a value of 600 m2/(stride-length-race). I don't know what that might mean...?
Instead, try following the step-by-step instructions, provided earlier.