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Sneha Thakur
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Asked: 2020-10-29T05:29:26+00:00 In:

A car has two wipers which do not overlap. Each wiper has a blade of length 25 cm sweeping through an angle of 115°. Find the total area cleaned at each sweep of the blades.

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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:11

2020-2021areas related to circles classcbsechapter 12class10mathematicsncert
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    2 Answers

    1. 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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    2. Best Answer
      A car has two wipers which do not overlap. Each wiper has a blade of length 25 cm sweeping through an angle of 115°. Find the total area cleaned at each sweep of the blades.

      Angle of each wiper = 115°
      Radius 25 cm
      Area cleaned at each sweep of the blade = Area of sector formed by wiper
      = 115°/360° × πr² = 23/72 × π(25)²
      = 23/72 × 22/7 × 25 × 25 = 151125/252 cm²
      Area cleaned by two wiper’s blades = 2 × 158125/252 = 158125/126 cm²

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