• Area - the amount of space inside a closed two-dimensional figure. Area is measured in square units, such as square centimeters or square feet.

    The rule to find the area of a rectangle is:

    A = l x w

    (Area is length times width)

    l = A  / w

    (length is Area divided by width)

    w = A / l

    (width is Area divided by length)

    Perimeter

    area and perimeter