A. 20%
B. 24%
C. 36%
D. 44%
Let length = x metres and breadth = y metres , then area =(xy)m2
New length = 120/100x (6x/5)m
New breadth = 120/100 y = 6y/5m
New area (6x/5 x 6y/5)m2 = (36/25 xy)m2
Increase in area = (36/25xy – xy)m2 = (11/25 xy)m2
Increase % = (11/25 xy x 1/xy x 100)% = 44%
Related Mcqs:
- A gardener increases the area of his rectangular garden by increasing its length by 40% and decreasing by 20%. The area of the new garden?
A. Has increase by 20%
B. Has increase by 12%
C. Has increase b 8%
D. Is exactly the same as the old area - The length of a rectangular plot is thrice its breadth. If the area of the rectangular plot is 867 sq m, then what is the breadth of the rectangular plot?
A. 8.5 m
B. 17 m
C. 34 m
D. 51 m - The length of a rectangular plot is twice its breadth. If the area of the rectangular plot is 6075 sq.meters .what is its length?
A. 45m
B. 75m
C. 135m
D. None of these - The length of a rectangular plot is increased by 25%. To keep it’s area uncharged the width of the plot should be___________?
A. Kept unchanged
B. Increased by 25%
C. Increased by 20%
D. Reduced by 20% - The length of the rectangular field is double its width. Inside the field there is square shaped pond 8m long. If the area of the pond is 1/8 of the area of the field. What is the length of the field?
A. 31 m
B. 32 m
C. 16 m
D. 20 m - If the perimeter of a rectangular garden is 600 m, its length when its breadth is 100 m is________?
A. 650 m
B. 600 m
C. 200 m
D. 300 m - The length of a rectangle is increased by 60 %. By what percent would the width have to be decreased to maintain the same area?
A. 37 ½ %
B. 60 %
C. 75 %
D. 120% - A path of uniform width turns the inside of a rectangular field 38m long and 32m wide. IF the path occupies 600 m2 than the width of the path is_______?
A. 3m
B. 5m
C. 8.75m
D. 10m - The length of a rectangle is increased by 60 %. By what percent would the width have to be decreased to maintain the same area?
A. 37 ½ %
B. 60 %
C. 75 %
D. none of these - A rectangular measure 8cm on length and it’s diagonals measures 10cm what is the perimeter of the rectangular?
A. 36cm
B. 38cm
C. 28cm
D. 18cm
