The length of a rectangle is twice the breadth. If area of the rectangle be 417.605 sq.m., then length is :

  1. 29.08m
  2. 9.08 m
  3. 28.90 m
  4. 28.09 m
Anurag Mishra Professor Asked on 27th December 2015 in Maths.
Add Comment
  • 1 Answer(s)

    Answer:  (3) 28.90 m 

    Explanation:-
    Let the breadth of the rectangular be X m. 

    The length of a rectangle is twice the breadth. 
    Then, length of the rectangle = 2 X m 

    If area of the rectangle be 417.605 sq.m.
    Then, X x 2 X = 417.605
    2 X^2 = 417.605
    X^2 = 417.605/2
    X^2 = 288.8025
    Square root on both side, 
    X = 14.45

    Then, length of the rectangle is 2 X = 2 x 14.45
     = 28.90 m 

    Hence, the correct answer is option (3) 28.90 m . 

    Anurag Mishra Professor Answered on 28th December 2015.
    Add Comment
  • Your Answer

    By posting your answer, you agree to the privacy policy and terms of service.