Question

if the length and breadth of a rectangle are doubled how many times the old rectangle will that of the new rectangle be?

Answer 1

$<i>$Let,

Original length = l

Original Breadth = b

Area of rectangle = Length × Breadth

= l × b = lb

After doubling,

New length, l' = 2l

New Breadth, b' = 2b

Area of new rectangle = Length × Breadth

= l' × b'

= 2l × 2b

= 4lb

= 4 ( lb )

= 4 × Area of rectangle

This show that the area of new rectangle is 4 times the area of original rectangle.

Answer 2

ANSWER :
--------------
if length and breadth of a rectangular will be double then four times the new rectangle will be bigger then old rectangular in case of both area and perimeter.

EXPELAINATION :
-------------------------
length - l width- b
after doubled- 2l after doubled- 2b

we know area= l X b
there for area=2l X 2b
=4lb
(areabecome increases
by 4 time)

we know that perimeter=2(l X b)
there for perimeter= 2(2l X 2b)
= 4(l X b)
(perimeter
become increases
by 4 time)

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