Question

If the legenth and breadth of a rectangle are doubled how many times the perimeter of the new rectangle be ​

Answer 1

Answer:

Original Dimensions = l,b

Original perimeter = 2(l+b)

New Dimensions = 2l, 2b

New perimeters = 2(2l+2b) =4(l+b)

New perimeter is 2 times the old perimeter

Answer 2

Answer:

Let the lenght be x.

The length is doubled so new lenght=2x.

Breath=x

Perimeter of rectangle=2(l+b)

Perimeter of rectangle=2(2x+x)

Perimeter of rectangle=4x+2x.

Perimeter of rectangle=6x.

The perimeter of the rectangle will be doubled 2 times.