Question

perimeter of a square and rectangle is same . if one side of square is 15 cm and one side of a rectangle is 18 cm find the area of rectangle

Answer 1

Perimeter of square = perimeter of rectangle
Perimeter of square =4*side=60 cm
Then the perimeter of rectangle will be 60 cm

But perimeter of rectangle=2(l+b)
60=2(18+b)
60=36+2b
2b=24
b=12 cm

Area of rectangle=l*b
=18*12=216 cm²

Answer 2

Hey mate!!!

The perimeter of the square = perimeter of the rectangle.

And,
Side of the square = s = 15 cm.
Another side of the rectangle is 18 cm.
Let the breadth be $x$ and the length of the rectangle is 18 cm.

Atq,
$4s = 2( l + b)$
=>$4*15 = 2( 18 + x)$
=>$60 = 2x + 36$
=>$2x = 60 - 36$
=>$x = \frac{24}{2}$
=>$x = 12$

Therefore,
Length of the rectangle is 12 cm.

And,
Area of the rectangle is l * b
= $12 * 18$
= $216 cm^2$

$<h1><b><marquee><font color = red>I hope it helps you...$