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Sneha Thakur
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Asked: 2020-10-29T05:29:32+00:00 In:

An umbrella has 8 ribs which are equally spaced Assuming umbrella to be a flat circle of radius 45 cm, find the area between the two consecutive ribs of the umbrella.

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NCERT Solutions for Class 10 Science Chapter 12
Important NCERT Questions
Areas Related To Circles Class,
NCERT Books for Session 2022-2023
CBSE Board and UP Board Others state Board
EXERCISE 12.2
Page No:231
Questions No:10

2020-2021areas related to circles classcbsechapter 12class10mathematicsncert
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    1. Best Answer
      An umbrella has 8 ribs which are equally spaced Assuming umbrella to be a flat circle of radius 45 cm, find the area between the two consecutive ribs of the umbrella.

      Radius = 45 cm
      There are total 8 sectors.
      Therefore, the angle of each sector= 360°/8 = 45°
      The area between the two consecutive ribs = Area of sector
      = 45°/360° × πr² = 1/8 × π(45)²
      = 1/8 × 22/7 × 45 × 45 = 22275/28 cm²

      Here is the video explanation of the above question😮👇

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    2. Get Hindi Medium and English Medium NCERT Solution for Class 10 Maths to download.
      Please follow the link to visit website for first and second term exams solutions.
      https://www.tiwariacademy.com/ncert-solutions/class-10/maths/chapter-12/

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