Question

Each side of a rectangle is doubled. Find the ratio between....

1.perimeter of the original rectangle and the resulting rectangle.
2. Areas of the original and resulting rectangle

Answer 1

Let length and breadth of rectangle be l and b respectively
So original perimeter = 2(l+b)
Original area = l×b
Resulting Perimeter = 2(2l +2b) = 4(l+b)
Resulting area = 2l ×2b
Ratio between :
1) perimeter of original and resulting rectangle = 2/4 =1:2
2) area of original and resulting rectangle = 1/4 =1:4
ANS.
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HOPE I HELPED U.