Math, asked by aditya443572, 1 year ago

The Wheels of a car are of diameter 80cm each. how many complete revolutions does each wheel make in 10 minute when the car is travelling at the speed of 66 km per hour? Its class 10 ncert 12.1 _q4

Answers

Answered by mahee007

d of car wheel=80m

r=40m

perimeter=2pr

=2*22/7*40

speed of car=66km/h

distance covered in 10min=66*10/60

=11,000,00cm

no. of revolution=total distance. in 10min/circumference of wheel

=1100000*7/2*22*40

=4375

aditya443572: Can you explain in briefly

mahee007: kk

mahee007: send it

aditya443572: this only

aditya443572: 12.1 q 4

aditya443572: samaj main nahi aaya thoda explain kardo

mahee007: fristly find the circumference of the wheel.and then Find the distance it covered in 10min in cm.then divide it. you get the ans

Answered by orangepieone23

Circumference of the wheel=2πr=2*22/7*80=502.8cm=5.02m

Speed of the car=66km/hr=66*5/18m/s=18.3m/s

There for the car travels 18.3m in a second.So in 10 minutes it travels 18.3*600s=10980m

Therefore no.of revolutions=10980/5=2196(approx.)

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