A rectangle is a special type of quadrangle where all the interior angles are equal to 90 degrees and all. The area of more complex shapes can usually be obtained by breaking them down into their aggregate simple shapes and totaling their areas. If the height and width are in cm the area is shown in cm².
Then you can determine y by filling in the x you found.
Define the formula for surface area of a cube. The area of more complex shapes can usually be obtained by breaking them down into their aggregate simple shapes and totaling their areas. A square is a special type of a rectangle where all the sides are equal. Measure the length of one side.