Home
Class 14
MATHS
The radius of a circle is increased by ...

The radius of a circle is increased by 2cm from 5 cm to 7 cm . What is the percentage change in area of the circle ?

A

`96%`

B

`35%`

C

`70%`

D

`74%`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • LOGARITHM

    QUANTUM CAT|Exercise QUESTION BANK|159 Videos

  • NUMBER SYSTEM

    QUANTUM CAT|Exercise QUESTION BANK|1091 Videos

Similar Questions

Explore conceptually related problems

If the radius of a circle increases from 5 cm to 5.1 cm, find the increase in area.

The radius of a circle is 7 cm. Find its area

The radius of a circle is increasing uniformly at the rate of 3cm/s. Find the rate at which the area of the circle is increasing when the radius is 10cm.

The radius of a circle is increasing uniformly at the rate of 4 cm/sec. Find the rate at which the area of the circle is increasing when the radius is 8 cm.

IF the radius of a circle increases from 3 cm to 3.2 cm, then the increase in the area of the circle is

If the radius of a circle is increasing at a uniform rate of 2 cm/s, then find the rate of increase of area of circt the instant when the radius is 20 cm.

The area of a circle is increased by 22 cm^2 its radius is increased by 1 cm. The original radius of the circle is

QUANTUM CAT-MENSURATION-QUESTION BANK
  1. The sum of the radius and the circumference of a circle is 51 cm . The...

    Text Solution

    |

  2. The difference between the circumference and the diameter of the cir...

    Text Solution

    |

  3. The radius of a circle is increased by 2cm from 5 cm to 7 cm . What i...

    Text Solution

    |

  4. If the circumference of a circle is increased by 20%, then its area wi...

    Text Solution

    |

  5. The area of a circular field is 124.74 hectares . The cost of fencing ...

    Text Solution

    |

  6. Eldeco Housing Pvt. Ltd purchased a circular plot of land for Rs. 1584...

    Text Solution

    |

  7. A figure consists of a square of side 'a' m with semicircle drawn on...

    Text Solution

    |

  8. The length of a rope by which a buffalo must be tethered so that she m...

    Text Solution

    |

  9. A circle of radius 'a' is divided into 6 equal sectors. An equilateral...

    Text Solution

    |

  10. In the following figure , the area in (cm^(2)) is :

    Text Solution

    |

  11. If the piece of wire 25 cm long is bent into an arc of a circle subten...

    Text Solution

    |

  12. Four horses are tethered at four corners of a square plot of 42 m so ...

    Text Solution

    |

  13. The circumference of the following figure is :

    Text Solution

    |

  14. The area of a minor sector subtending the central angle at the centr...

    Text Solution

    |

  15. The area of a sector of a circle of radius 8 cm , formed by an arc of ...

    Text Solution

    |

  16. How long will a man take to go, walking at 13.2 km/h , round a circula...

    Text Solution

    |

  17. What is the radius of circular field whose area is equal to the sum o...

    Text Solution

    |

  18. A rope by which a calf is tied is decreased from 23 m to 12 m. What i...

    Text Solution

    |

  19. A wire is bent in the form of a square of side 66 m . It is cut and ag...

    Text Solution

    |

  20. A wire is in the form of a circle of radius 42 m is cut and again ben...

    Text Solution

    |