Can someone help me with the second math question?

Question

Answer 1

p=2*(w+h)

a=w*h=24

h=24/w

w=24/h

p=2*(w+24/w)

Answer 2

 A rectangle has an area of 24 square inches. 

 Let w denote the width in inches of   the   rectangle.

 (a) Express the height of the rectangle in terms of w.

 h = 24 ÷ w

 (b) Express the perimeter of the rectangle in terms of w.

 p = 2(w + (24 ÷ w))