Home
Class 7
MATHS
The area of a circle is increased by 22 ...

The area of a circle is increased by 22 `c m^2` when its radius is increased by 1 cm. The original radius of the circle is (a)6 cm (b) 3 cm (c)4 cm (d) 3.5 cm

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • MENSURATION-1

    RD SHARMA|Exercise All Questions|163 Videos

  • OPERATIONS ON RATIONAL NUMBERS

    RD SHARMA|Exercise All Questions|101 Videos

Similar Questions

Explore conceptually related problems

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

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

If the radius of a sphere is increased by 2cm, then its surface area increases by 352cm2. The radius of the sphere before the increase was (a) 3cm (b) 4cm (c) 5cm

The area of a circle is 616 cm^(2) . Find its radius (in cm).

A triangle with sides 13cm,14cm and 15cm is inscribed in a circle.The radius of the circle is (a) 2cm (b) 3cm (c) 4cm (d) 8.125cm

If the area of a semi-circle is 1925 cm^(2) , then find its radius (in cm).

If the area of a sector of a circle bounded by an arc of length 5pi cm is equal to 20pi\ c m^2 , then the radius of the circle is (a) 12 cm (b) 16 cm (c) 8 cm (d) 10 cm

RD SHARMA-MENSURATION-2-All Questions
  1. The area of circle is 100 times the area of another circle. What is...

    Text Solution

    |

  2. The ratio of the perimeter (circumference) and diameter of a circle...

    Text Solution

    |

  3. The ratio of the area and circumference of a circle of diameter d is...

    Text Solution

    |

  4. The cost of fencing a circular garden of radius 21 m at Rs 10 per me...

    Text Solution

    |

  5. If the diameter of a circle is equal to the diagonal of a square, th...

    Text Solution

    |

  6. A circle is inscribed in a square of side 14 m. The ratio of the are...

    Text Solution

    |

  7. How many times should a wheel of radius 7 m rotate to go around the ...

    Text Solution

    |

  8. The minute hand of a clock is 14 cm long. How far does the tip of th...

    Text Solution

    |

  9. The cost of fencing a semi-circular garden of radius 14 m at Rs 10 p...

    Text Solution

    |

  10. The area of a square is equal to the area of a circle. The ratio be...

    Text Solution

    |

  11. If A is the area and C is the circumference of a circle, then its ra...

    Text Solution

    |

  12. The area of a circle of circumference C is (a)(C^2)/(4pi) (b) (C^2)/(...

    Text Solution

    |

  13. The circumference of a circle is 44 cm. Its area is (a)77 c m^2 (b)...

    Text Solution

    |

  14. Each side of an equilateral triangle is equal to the radius of a cir...

    Text Solution

    |

  15. The area of a circle is 9pi\ c m^2dot Its circumference is (a)6pi\ c m...

    Text Solution

    |

  16. The area of a circle is increased by 22 c m^2 when its radius is incre...

    Text Solution

    |

  17. The radii of two circles are in the ratio 2: 3. The ratio of their ar...

    Text Solution

    |

  18. The areas of two circles are in the ratio 49 : 36. The ratio of their...

    Text Solution

    |

  19. The circumferences of two circles are in the ratio 3: 4. The ratio o...

    Text Solution

    |

  20. The difference between the circumference and radius of a circle is 3...

    Text Solution

    |