
Let's get it solved ~
We have been given length and width of a rectangle in terms of x ~
that is :
Area of the rectangle is given ~ i.e 24 unit²
Area of rectangle in terms of x is :







but since side of a rectangle can't be negative, we have to take value of x as 5
now, Perimeter of rectangle is ~



plug In the value of x ~




So, the correct choice is b~