What is the correct answer?


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

A. 44%

B. 45%

C. 34%

D. 35%

Correct Answer :

A. 44%

Let original length = x metres and original breadth = y metres
Original Area=xy m2
New Length =120100x=65x
New Breadth=120100y=65y
New Area=65x * 65y   
New Area=3625xy
Area Difference=3625xyxy                            
Increase%=DifferenceActual * 100   
=11xy25 * 1xy * 100

Related Questions

The perimeters of 5 squares are 24 cm, 32 cm, 40 cm, 76 cm and 80 cm respectively.… The percentage increase in the area of a rectangle, if each of its sides… The length of a rectangle is 18 cm and its breadth is 10 cm. When the… A towel, when bleached, was found to have lost 20% of its length and 10%… The ratio between the length and the breadth of a rectangular park is… The length of a room is 5.5 m and width is 3.75 m. Find the cost of paving… The length of a rectangular polt is 20 metres more than its breadth. If… A rectangular parking space is marked out by painting three of its sides.… The area of a rectangle is 460 square metres. If the length is 15% more… A rectangular plot measuring 90 metres is to be encloseed by wire fencing.… What will be the cost of gardening 1 meter boundary around a rectangular… 50 square stone slabs of equal size were needed to cover a floor area… A courtyard is 25 meter long and 16 meter board is to be paved with bricks… The Diagonals of two squares are in the ratio of 2:5. find the ratio of… The diffrence between the length and breadth of a rectangle is 23 m. If… The breadth of a rectangular field is 60% of its length. If the perimeter… The length of a rectangular plot is 60% more than its breadth. If the… Area of a Rectangular park is 2400 sq.meter. If length of the park decreases… A rectangular field is to be fenced on three sides leaving a side of 20… The perimeters of two squares are 40 cm and 32 cm. Find the perimeter… What are the least number of square tiles required to pave the floor of… A farmer wishes to start a 100 sq. m. rectangular vegetable garden. Since…