Question

length of rectangle is twice its breadth and its perimeter is 72 M find the area of rectangle and area written by selina mathematics icse
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Answer 1

let breadth be x

length=2x

perimeter=2(l+b)

72=2(x+2x)

72= 2(3x)

72=6x

x= 12

breadth=12m

length=2(12)

24 m

area=lb

24*12

288m^2

Answer 2

$let$

$length:-2x$

$breadth:-x$

$so,$

$perimeter=2(Length+breadth)$

$2(2x+x)=72$

$6x=72$

$x=12cm$

$so,$

$breadth:- 12cm$

$length:- 24cm$

_________________________________

Area of rectangle=

$Length*breadth$

$24*12$

$288m^2$

hope it helps✌✌✍✍