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.
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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.
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