What will be the Side of the Square? If

If the side of a square increase by 4 cm. the area increase by 60 sq. cm. The side of the square is-

  1. 4 cm
  2. 5.5 cm
  3. 14 cm
  4. None of these
Monis Rasool Professor Asked on 24th May 2015 in Maths.
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  • 1 Answer(s)

    Answer: (b) 5.5 cm
    Explanation:-

    Let be the side of square = X  then, area of square = X2 sq.cm.

    According to question,  (X + 4)(X + 4) = X2 + 60
    X2 + 4X + 4X + 16 = X2 + 60
    X2 + 8X = X2 + 60 – 16
    8X = 44
    X = 44/8
    X = 5.5

    Hence, the side of square is 5.5cm

    Anurag Mishra Professor Answered on 24th May 2015.
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