Answered

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Pierre's unicycle wheel has a diameter of 80 cm.
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 100 m unicycle race.
How many times must the wheel rotate
completely in order for Pierre to
travel 100 m?
Give your answer to the nearest
whole number.

Sagot :

Answer:

a) 251.33 cm

b) 40 times

Step-by-step explanation:

C = d x r

a) C = 80 cm x 3.14 = 251.33 cm

b) 100 m = 10,000 cm

10,000cm/251.33cm = 40 times

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