Home
Class 14
MATHS
To make two triangles, a rectangular pap...

To make two triangles, a rectangular paper is cut slant. If the diagonal is `4 sqrt5` and the length is twice the width, then the area of the rectangle is:
दो त्रिभुज बनाने के लिए एक आयताकार कागज को तिरछा काटा जाता हैं | यदि विकर्ण `4 sqrt5` हैं और चौड़ाई तुलना में लम्बाई दोगुनी है, तो आयत का क्षेत्रफल है :

A

`54 cm^2`

B

`72 cm^2`

C

`32 cm^2`

D

`80 cm^2`

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • MEAN, MEDIAN & MODE

    PINNACLE|Exercise EXERCISE|39 Videos
  • MIXTURE & ALLIGATION

    PINNACLE|Exercise EXERCISE|26 Videos
PINNACLE-MENSURATION-EXERCISE
  1. Which of the following has the maximum number of vertex? निम्नलिखित ...

    Text Solution

    |

  2. How much volume will the wood need to make a closed box of 2.5cm thick...

    Text Solution

    |

  3. To make two triangles, a rectangular paper is cut slant. If the diagon...

    Text Solution

    |

  4. An 18 m deep well with diameter 7 m is dug and the earth from digging ...

    Text Solution

    |

  5. A right circular cylinder of maximum possible size is cut out from a s...

    Text Solution

    |

  6. The ratio of the volumes of two cylinders is x:y and the ratio of thei...

    Text Solution

    |

  7. If the radius of a right circular cylinder is decreased by 20% while i...

    Text Solution

    |

  8. If the radius of the base of a cone is doubled, and the volume of the ...

    Text Solution

    |

  9. If the diameter of the base of a cone is 42 cm and its curved surface ...

    Text Solution

    |

  10. If a cuboid of dimensions 32cm x 12cm x 9cm is cut into two cubes of s...

    Text Solution

    |

  11. The base of right prism is a trapezium whose parallel sides are 11cm a...

    Text Solution

    |

  12. The lateral surface area of a cylinder is 352 cm^2. If its height is 7...

    Text Solution

    |

  13. The internal and external radii of a hollow hemispherical vessel are 6...

    Text Solution

    |

  14. Three solid metallic spheres whose radii are 1cm, x cm and 8 cm, are m...

    Text Solution

    |

  15. If the radius of a sphere is increased by 4 cm, its surface area is in...

    Text Solution

    |

  16. The volume of a right pyramid is 45 sqrt3 cm^3 and its base is an equi...

    Text Solution

    |

  17. The area of the base of a right circular cone is 400 pi and its height...

    Text Solution

    |

  18. The base of a right prism is a triangle with sides 20 cm, 21 cm and 29...

    Text Solution

    |

  19. A cylindrical vessel of radius 3.5 m is full of water. If 15400 litres...

    Text Solution

    |

  20. A solid metallic sphere of radius 8 cm is melted and drawn into a wire...

    Text Solution

    |