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  1. Asked: In:

    Find the surface area of a sphere of diameter: 3.5 m.

    Aarani

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download. Please follow the link to visit website for first and second term exams solutions. https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-13/

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download.
    Please follow the link to visit website for first and second term exams solutions.
    https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-13/

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    • 1
  2. Asked: In:

    The radius of a spherical balloon increases from 7 cm to 14 cm as air is being pumped into it. Find the ratio of surface areas of the balloon in the two cases.

    Aarani

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download. Please follow the link to visit website for first and second term exams solutions. https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-13/

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download.
    Please follow the link to visit website for first and second term exams solutions.
    https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-13/

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    • 1
  3. Asked: In:

    A hemispherical bowl made of brass has inner diameter 10.5 cm. Find the cost of tin-plating it on the inside at the rate of Rs 16 per 100 cm².

    Aarani

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download. Please follow the link to visit website for first and second term exams solutions. https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-13/

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download.
    Please follow the link to visit website for first and second term exams solutions.
    https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-13/

    See less
    • 1
  4. Asked: In:

    Find the radius of a sphere whose surface area is 154 cm².

    Aarani

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download. Please follow the link to visit website for first and second term exams solutions. https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-13/

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download.
    Please follow the link to visit website for first and second term exams solutions.
    https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-13/

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    • 3
  6. Asked: In:

    The floor of a rectangular hall has a perimeter 250 m. If the cost of painting the four walls at the rate of Rs 10 per m² is Rs 15000, find the height of the hall.

    Aarani

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download. Please follow the link to visit website for first and second term exams solutions. https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-12/

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download.
    Please follow the link to visit website for first and second term exams solutions.
    https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-12/

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    • 1
  7. Asked: In:

    The length, breadth and height of a room are 5 m, 4 m and 3 m respectively. Find the cost of white washing the walls of the room and the ceiling at the rate of Rs 7.50 per m².

    Aarani

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download. Please follow the link to visit website for first and second term exams solutions. https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-13/

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download.
    Please follow the link to visit website for first and second term exams solutions.
    https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-13/

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    • 1
  8. Asked: In:

    A plastic box 1.5 m long, 1.25 m wide and 65 cm deep is to be made. It is to be open at the top. Ignoring the thickness of the plastic sheet, determine:

    Aarani

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download. Please follow the link to visit website for first and second term exams solutions. https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-13/

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download.
    Please follow the link to visit website for first and second term exams solutions.
    https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-13/

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    • 1
  9. Asked: In:

    Prove that the line of centers of two intersecting circles subtends equal angles at the two points of intersection.

    Aarani

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download. Please follow the link to visit website for first and second term exams solutions. https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-10/

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download.
    Please follow the link to visit website for first and second term exams solutions.
    https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-10/

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    • 1
  11. Asked: In:

    Prove that a cyclic parallelogram is a rectangle.

    Aarani

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download. Please follow the link to visit website for first and second term exams solutions. https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-10/

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download.
    Please follow the link to visit website for first and second term exams solutions.
    https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-10/

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    • 2
  12. Asked: In:

    ABC and ADC are two right triangles with common hypotenuse AC. Prove that ∠CAD = ∠CBD.

    Aarani

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download. Please follow the link to visit website for first and second term exams solutions. https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-10/

    Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download.
    Please follow the link to visit website for first and second term exams solutions.
    https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-10/

    See less
    • 2