A 4 r 2. Answer As we already have a formula for calculating the area of a Square. Surface Area of a Rectangular Prism 2ab 2bc 2ac.
And the perimeter of a square 4 side units.
Hence the area of a square is the product of the two sides of the square. Formula of the square area in terms of the length of the segment l Fig2. Since the area of a square or rectangle is length x width we can just square the length of the side. In the above example the area of the collage comes out to be 40 and the unit of area is square centimeter.