The radius of a wheel of a vehicle is 42 CM. How many revolution will it complete in a journey of 19.8km
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Answered by
3
Radius of Wheel = 42 cm
Note -
♢ Π = pi = 22 / 7
Circumference of the Wheel
= 2Πr
= [ 2 × 22 / 7 × 42 ] cm
= [ 2 × 22 × 6 ] cm
= 264 cm
Distance travelled by the Wheel
= 19.8 km
= (19.8 × 100,000) cm
= 1,980,000 cm
Therefore,
Number of Revolutions by the Wheel
= Distance travelled by the Wheel / Circumference of the Wheel
= 1,980,000 cm / 264 cm
= 1,980,000 / 264
= 7,500
Hence, the Wheel will take 7,500 complete revolutions in a journey of 19.8 km
Note -
♢ Π = pi = 22 / 7
Circumference of the Wheel
= 2Πr
= [ 2 × 22 / 7 × 42 ] cm
= [ 2 × 22 × 6 ] cm
= 264 cm
Distance travelled by the Wheel
= 19.8 km
= (19.8 × 100,000) cm
= 1,980,000 cm
Therefore,
Number of Revolutions by the Wheel
= Distance travelled by the Wheel / Circumference of the Wheel
= 1,980,000 cm / 264 cm
= 1,980,000 / 264
= 7,500
Hence, the Wheel will take 7,500 complete revolutions in a journey of 19.8 km
Answered by
5
Answer:- Required number of revolution is 7500.
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