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An accessibility ramp for wheelchairs is to be made alongside the staircase. The guidelines given for the slope of the ramp is 1 cm vertical rise to 12 cm horizontal length. What should be the horizontal length of the ramp if the total height of the stairs is 18 cm?

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The given slope ratio is 1 / 12. For a total vertical height of 18 cm, the horizontal length must be 18 × 12 = 216 cm, which equals 2.16 metres.

Cbse released Class 9 Ganita Manjari Part 2 book
Chapter 13 Two Variables, One Line (Ganita Manjari 2) Solutions

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1 Answer

  1. The slope guideline requires a ratio of vertical rise to horizontal run equal to 1 / 12. Setting up the proportional relationship gives Rise / Run = 1 / 12. Given that the total rise of the staircase is 18 cm, substituting this into the equation yields 18 / Run = 1 / 12. Cross-multiplying gives Run = 18 × 12 = 216 cm (or 2.16 m).

     

    For more NCERT Solutions of Class 9 Maths Ganita Manjari Part 2 Chapter 13 Two Variables, One Line Question Answer (2026-27)

    https://www.tiwariacademy.com/ncert-solutions/class-9/maths/ganita-manjari-chapter-13/

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