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Jagannath Dixit
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Asked: 2020-11-05T08:09:56+00:00 In:

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

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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 13.4
Page No:225
Questions No:2 Part:3

2020-2021cbsechapter 13class 9mathematicsncertsurface areas and volumes
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    2 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 sphere r = 3.5/2 = 1.75 cm
      Surface area of sphere = 4πr²
      = 4 × 22/7 × 1.75 × 1.75 = 4 × 22 × 0.25 × 1.75
      = 38.50 cm²
      Hence, the surface area of sphere is 38.5 cm².

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