The sum of the length and the breadth of a rectangle is 240 cm. If the

1.	The sum of the length and the breadth of a rectangle is 240 cm. If the length isdecreased by 20% and the breadth is increased by 10% the perimeter remains thesame. Find the dimensions of the rectangle.
Answer» Let length be 10 And breadth be 10 Area 100 Now length is increased by 20% New length 12 And breadth is decreased by 10% New breadth is 9 New area is 12*9=108 Change in area 108-100= 8 So overall areaincreases by 8%

The sum of the length and the breadth of a rectangle is 240 cm. If the length isdecreased by 20% and the breadth is increased by 10% the perimeter remains thesame. Find the dimensions of the rectangle.

Answer»

Let length be 10

And breadth be 10

Area 100

Now length is increased by 20%

New length 12

And breadth is decreased by 10%

New breadth is 9

New area is 12*9=108

Change in area 108-100= 8

So overall areaincreases by 8%