logo

CuriousTab

CuriousTab

Discussion


Home Aptitude Area Comments

  • Question
  • The percentage increase in the area of a rectangle, if each of its sides is increased by 20%


  • Options
  • A. 22%
  • B. 33%
  • C. 44%
  • D. 55%

  • Correct Answer
  • 44% 

    Explanation

    Let original length = x metres and original breadth = y metres.

    Original area = xy sq.m 

    Increased length  =  120 100  and Increased breadth =  120 100  

     

    New area =  120 100 x * 120 100 y = 36 25 x y   m 2  

     

    The difference between the Original area  and New area  is:  

    36 25 x y - x y

     

    11 25 x y  Increase % = 11 25 x y x y * 100 = 44%


  • Area problems


    Search Results


    • 1. A parallelogram has sides 30m and 14m and one of its diagonals is 40m long. Then its area is

    • Options
    • A. 136
    • B. 236
    • C. 336
    • D. 436
    • Discuss
    • 2. The diagonal of a rectangle is 41 cm and its area is 20 sq. cm. The perimeter of the rectangle must be:

    • Options
    • A. 18
    • B. 28
    • C. 38
    • D. 48
    • Discuss
    • 3. If the radius of a circle is decreased by 50% , find the percentage decrease in its area.

    • Options
    • A. 75%
    • B. 65%
    • C. 35%
    • D. 25%
    • Discuss
    • 4. If the diagonal of a rectangle is 17cm long and its perimeter is 46 cm. Find the area of the rectangle.

    • Options
    • A. 110
    • B. 120
    • C. 130
    • D. 140
    • Discuss
    • 5. If each side of a square is increased by 25%, find the percentage change in its area.

    • Options
    • A. 56.25%
    • B. 36.25%
    • C. 16.25%
    • D. 12.25%
    • Discuss
    • 6. A man walked diagonally across a square plot. Approximately what was the percent saved by not walking along the edges?

    • Options
    • A. 10%
    • B. 20%
    • C. 30%
    • D. 40%
    • Discuss
    • 7. A wire can be bent in the form of a circle of radius 56cm. If it is bent in the form of a square, then its area will be

    • Options
    • A. 7744
    • B. 8844
    • C. 5544
    • D. 4444
    • Discuss
    • 8. The ratio of the area of a square to that of the square drawn on its diagonal is

    • Options
    • A. 1:2
    • B. 2;3
    • C. 3:1
    • D. 4:1
    • Discuss
    • 9. The area of the largest circle that can be drawn inside a rectangle with sides 18cm by 14cm is

    • Options
    • A. 49
    • B. 154
    • C. 378
    • D. 1078
    • Discuss
    • 10. The altitude drawn to the base of an isosceles triangle is 8cm and the perimeter is 32cm. Find the area of the triangle?

    • Options
    • A. 50
    • B. 60
    • C. 70
    • D. 80
    • Discuss


    Comments

    There are no comments.

Enter a new Comment