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the wheel of a car of diameter 80cm each. How many complete revolution does each wheel make in 10 minutes when the car is travelling at a speed of 66km per hour

Posted by Amar Singh 4 years, 7 months ago

CBSE > Class 10 > Mathematics

2 answers

Rohit Meshram 4 years, 7 months ago

Hii freinds Here, distance= speed / time Therefore,speed= 66 km/hr. Time=10 min = 10/60 hr. = 1/6hr. Putting value in formula, Distance=speed/ time Distance=66/1/6 Now, Distance= 66×1/6 Distance= 11 km. Distance= 11 11×1000m 11000m 11000×100cm 1100000cm Now, No.of revolution=total distance/dist.covered in 1 revolution 1100000/80×22/7 110000/8×22/7 110000×7/8×22 4375 Hence, No.of revolution = 4375.

Ankur Yadav 4 years, 7 months ago

since the car is travelling at speed of 66km/h then it will cover distance of 66000/60 m/minute=1100 m/minute Now if car is moving for 10min then distance covered =11000m Circumference of wheel=17.6/7 Then no. of revolution=11000/17.6/7=11000*7/17.6=4375times

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This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

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