Question

Find the change in area of rectangle when its length is double and breadth is remmining same

Answer 1

area =l*b
change in area= 2l*b

Answer 2

Area of a rectangle = length*breadth
Where l = length and b = breadth

So,
Area = l*b
Now,
New length = 2l
So,
New area = 2l*b = 2lb
which is double the original area.

The area has been increased to 200% of the original area