The wheels on a bicycle each have a diameter of 670mm. The wheels turn 10 times. Approximately, how many metres has the bicycle travelled?

Circumference => πd

i.e. 1 revolution is π x 0.67 metres

=> 10 revs is 6.7 x π = 21 metres

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10 pi 335^2 mm

= 3526 meters

C = π d

C = π (670mm)

C = 2,104.86 mm

solving for D

R = D/C

D = CR

D = (2,104.86 mm)(10)

D = 96,690 mm answer//

One wheel turn gives: x : 2(pi)r = (pi)d …..:unit depends on the unit of diameter

if d = 670mm then x = (3.15) * 670mm = 2110.5 mm

If it turns 10 times then it will be (10* 2110.5) = 21105 mm

21105 mm = 21.105 m = 21.11m (approx.) <= ans

6.7π ≈ 21.05 m

The front wheel has travelled: 0.67*pi*10 = about 21 meters

0.670*π*10= 6.70π ≈ 21.0 m

6.7 meters