a bicycle wheel , diameter 56 cm , is making 45 revolutions in every 10 seconds. at what speed km/hr is the bicycle.
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Diameter = 56 cm
Radius, r = 28 cm
Distance travelled in 1 revolution
Radius, r = 28 cm
Distance travelled in 1 revolution
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Answered by
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radius = 28 cm = 0.00028 km
time = 10 s = 0.0028 hr
distance = 45 × (2πr)
= 45 × 2 × 22/7 × 0.00028
= 0.079 km
time = 0.0028 hr
speed = distance / time
= 0.079 / 0.0028
= 28.21 km/hr
Hope this helps... plsss make it the brainliest
time = 10 s = 0.0028 hr
distance = 45 × (2πr)
= 45 × 2 × 22/7 × 0.00028
= 0.079 km
time = 0.0028 hr
speed = distance / time
= 0.079 / 0.0028
= 28.21 km/hr
Hope this helps... plsss make it the brainliest
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