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Divakar Pandey
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Asked: 2020-11-05T03:20:55+00:00 In:

The slant height and base diameter of a conical tomb are 25 m and 14 m respectively. Find the cost of white-washing its curved surface at the rate of Rs 210 per 100 m².

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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:6

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. Radius of conical tomb r = 14/2 = 7 m and slant height l = 25 m
      Curved surface area of conical tomb = πrl
      = 22/7 × 7 × 25 = 550 m²
      Cost of white washing at the rate of Rs 210 per 100 m² = Rs 550 × 210/100 = Rs. 1155
      Hence, the cost of white washing curved surface area is Rs 1155.

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    3. Best Answer

      Get here all the solutions of class 9 Maths Exercise 11.1 Question 6
      https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-11/
      Video Solution:

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