Home
Class 10
MATHS
The wheels of a car are of diameter 80 c...

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

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

The wheels of a car are diameter 70 cm each. How many complete revolutions does each wheel make in oneminute when the car is travelling at the speed of 52.8 km per hour.

The wheel of a carriage is 91 cm in diameter and makes 5 revolutions per second. How fast is the carriage running ?

The wheel of a railway carriage is 40cm in diameter and makes 6 revolutions in a second, how fast is the train going?

A car takes 2 hours to reach a destination by travelling at the speed of 60 km/h. How long will it take when the car travels at the speed of 80 km/h?

The wheel of a railway carriage is 40 cm in diameter and makes 7 revolutions in a second, find the speed of train.

A car travels 4 km in 3 minutes. Find the speed of car in cms^-1

The two rails of a railway track, insulated from each other and the ground, are connected to a milli voltmeter. What is the reading of the milli voltmeter when a train travels at a speed of 180 km//hours along the track, given that the vertical components of earth's magnitic field is 0.2xx10^(_4) weber//m^(2) & the rails are separated by 1 meter?

Two cars start together in the same direction at the same place.The first goes with the speed of 10km/hr. The second goes at the speed of 8 km/hr in the first hour and increases the speed by 1/2 km each succeeding hour. After how many hours will the second car overtake the first if both cars go non-stop ?

In each of the following problems, clearly state what the relevant and irrelevant factors are while going through Steps 1, 2 and 4 given in this chapter :- Suppose a car starts from a place A and travels at a speed of 40 km/h towards another place B. At the same instance, another car starts from B and travels towards A at a speed of 30 km/h. If the distance between A and B is 100 km, after how much time will the cars meet?

MBD-Areas of Plane Figures.-Exercise
  1. The wheels of a car are of diameter 80 cm each. How many complete revo...

    Text Solution

    |

  2. A bicycle wheel makes 500 revolutions in moving 11 km. Find the diamet...

    Text Solution

    |

  3. The area of a circle is equal to the sum of the areas of the two circl...

    Text Solution

    |

  4. The diameters of two circles are in the ratio of 4 : 3and the sum of t...

    Text Solution

    |

  5. The circumference of a circle is numerically equal to its area. Show t...

    Text Solution

    |

  6. The area enclosed between two concentric circles is 770 sq. cm given t...

    Text Solution

    |

  7. The circumference of a circle exceeds its diameter by 30. Find the cir...

    Text Solution

    |

  8. The cost of mowing the grass inside of circular lawn at the rate of Rs...

    Text Solution

    |

  9. A wire is in the form of a circle with diameter 21 cm. It is cut and b...

    Text Solution

    |

  10. Two circles of radii 15 cm and 8 cm touch each otherinternally. Find t...

    Text Solution

    |

  11. The radii of two circles are 8 cm and 6 cm respectively. Find the radi...

    Text Solution

    |

  12. A road, which is 7 m wide surrounds a circular path whose circumferenc...

    Text Solution

    |

  13. A chord of a circle of radius 12 cm subtends an angle of 120^@ at the ...

    Text Solution

    |

  14. In a circle of radius 21 cm, an arc subtends an angle of 60° at the ce...

    Text Solution

    |

  15. The radius of a semi-circular protactor is 14 cm. Find its perimeter a...

    Text Solution

    |

  16. The circumference of a circle is 88 cm. Find the area of the sector, w...

    Text Solution

    |

  17. The perimeter of a sector of a circle of radius 5.8 m is 27.2 m. Find ...

    Text Solution

    |

  18. A chord of a circle of radius 21 cm subtends an angle of 120^@ at the ...

    Text Solution

    |

  19. Find the radius of the circle if length of the arc is 4pi cm and angle...

    Text Solution

    |

  20. A square is made inside the circle. Find the area of that portion of t...

    Text Solution

    |

  21. In the fig. fourth quadrant of a circle is OACB where O is the centre ...

    Text Solution

    |