A bicycle wheel is 1m 26 cm in diameter the distance traveled in 1 rotation of the wheel and the number of rotations of the wheel needed to cover 1.98 km.
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diameter of the wheel =1.26m =0.126km
distance travelled in one rotation =circumference of the wheel (circle )
=
=22÷7×0.126
=0.396
The wheel travelled distance of 0.396or3.96 in one rotation
No of rotation in 1.98 km = total distance ÷distance covered in one rotation
= 1.98÷0.396
= 5
There fore 5 rotation will be needed to cover 1.98km of distance
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