7- The diameter of a wheel of a bus is 112 cm. How many revolutions will it make to cover
7)
= 88 cm
(Use T
Em
1 km 56 metres?
The circumferences of two circles are in the ratio 1: 3. Find the ratio of their areas.
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Here's ur answer... given the diameter of the wheel is 112cm.
therefore radius of the wheel = 112/2
= 56cm
in metres = 56/100
= 0.56m
circumference of the wheel = 2πr
= 2×22/7×0.56
= 24.64/7
= 3.52m
we know that 1km = 1000m
therefore 1km 56m = 1000+56
= 1056m
hence no. of revolutions it will take to cover 1km 56m = 1056/3.52
= 300
hope this helps..!
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