Question

6. What will be the change in the area of a rectangle, if the:
(a) length and breadth are tripled
(c) length is doubled and breadth remains the same (d) breadth is doubled but length remains the same
(b) length is doubled but breadth is halved​

Answer 1

Step-by-step explanation:

a) let the length and breadth of rectangle x and y respectively .

area of rectangle = l×b

= xy

ACQ

3x × 3y = 9xy

so the area of rectangle is 9× intial area

c) let the length and breadth of rectangle x and y respectively

area of rectangle = l×b

= xy

ACQ

2x × y = 2xy

so the area of rectangle is double

d) let the length and breadth of rectangle x and y respectively

area of rectangle = l×b

= xy

ACQ

x × 2y = 2xy

so the area of rectangle is double

b) let the length and breadth of rectangle x and y respectively

area of rectangle = l×b

= xy

ACQ

2x × 1/2y = xy

so the area of rectangle is remain same