📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!
  • google app store apple app store
    • ✖

      Question

      The ratio between the number of sides of two regular

      polygon is 1 : 2 and the ratio between their interior angles is 2 : 3. The number of sides of these polygons are respectively:
      A 4 Correct Answer Incorrect Answer
      B 9 Correct Answer Incorrect Answer
      C 3 Correct Answer Incorrect Answer
      D 5 Correct Answer Incorrect Answer

      Solution

      Let number of side of first polygon = x & that of 2nd polygon = 2x ; then ratio of their interior angles = I(1): I(2) = 2:3 or (180 - E1):(180-E2) = 2:3 or 540 - 3E1 = 360 -2E2 oe 3E1 - 2E2 = 540-360 = 180 or 3(360/x) - 2(360/2x) = 180 or 1080/x -360/x = 180 or 720/x = 180 or x = 720/180 = 4

      Practice Next
      More Mensuration Questions

      Relevant for Exams:

      ask-question