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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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    1. 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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    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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