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

      Question

      Calculate  the perimeter of a square when the area of a

      circle that circumscribes it is 486 square centimeters. (Assume π = 3 for calculations.)
      A 65 cm Correct Answer Incorrect Answer
      B 70 cm Correct Answer Incorrect Answer
      C 72 cm Correct Answer Incorrect Answer
      D 50 cm Correct Answer Incorrect Answer
      E none of these Correct Answer Incorrect Answer

      Solution

      ATQ, Let radius of the circle is ‘r’ cm. So, πr 2 = 486 Or, r 2 = 162 Or, r = 9√2 So, diameter of circle = diagonal of square Or, √2 × side of square = 2 × 9√2 So, side of square = 18 Perimeter of square = 4 × side = 4 × 18 = 72 cm

      Practice Next
      More Mensuration Questions

      Relevant for Exams:

      ask-question