a) how far does the unicycle move if the wheel turns once?
give your answer in metres, correct to 2 decimal places
b) pierre enters a 100m unicycle race. how many times must the wheel rotate completely in order for pierre to travel 11m?
give your answer to the nearest whole number
Circumference of circle = pi * d
= pi 80 = 251.33 cm
m x (100 cm/m) / (251.33 cm / rotation) = 4.38 rotations ~~ 4 rotations
The first one is not wrong....you just didn't read my answer and finish the work 251.33 cm IS 2.5133 m Don't be lazy !!!
The second one is correct too.....perhaps you did not enter the question correctly...??
how many times must the wheel rotate completely in order for pierre to travel 11m? Maybe you meant 100 m not 11 m ?