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Divakar Pandey
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Asked: 2020-11-05T03:20:29+00:00 In:

Diameter of the base of a cone is 10.5 cm and its slant height is 10 cm. Find its curved surface area.

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NCERT Solutions for Class 9 Maths Chapter 13
Important NCERT Questions
Surface Areas and Volumes
NCERT Books for Session 2022-2023
CBSE Board, UP Board and Other state Boards
EXERCISE 13.3
Page No:221
Questions No:1

2020-2021cbsechapter 13class 9mathematicsncertsurface areas and volumes
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    3 Answers

    1. 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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    2. Best Answer

      Radius of cone r = 10.5/2 = 5.25 cm and slant height l = 10 cm
      Curved surface area of cone = πrl
      = 22/7 × 5.25 × 10
      = 22 × 0.75 × 10
      = 165 cm²
      Hence, the curved surface area of cone is 165 cm².

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    3. Get here all the solutions of class 9 Maths Exercise 11.1 Question 1
      https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-11/
      Video Solution:

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