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Jeevan Kumar
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Asked: 2020-11-05T03:16:52+00:00 In:

A river 3 m deep and 40 m wide is flowing at the rate of 2 km per hour. How much water will fall into the sea in a minute?

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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 13.5
Page No:228
Questions No:9

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

      Speed of river l = 2 Km/h = 2000 m/h, breadth b = 40 m and height h = 15 m
      Volume of water fall into the sea in 1 hour = lbh = 2000 × 40 × 3 = 240000 m³
      So, volume of water fall into the sea in 1 minute = 240000m³/60 = 4000 m³
      Hence, in 1 minute, 4000 m³ will fall into the sea.

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