Given, length and breadth of rectangle is 8 cm and 6 cm respectively.
Since, perimeter of a rectangle=2(8+6)
=2(14)
=28 cm
And also we have perimeter of square = perimeter of rectangle
⇒4×side=28 cm
⇒side=284
∴side=7
Now, are of square=side2
=7×7
=49 cm2
Hence, area of square is 49 cm2