The circle is a flat surface or area limited or closed by a circumference. It is a two-dimensional figure and is formed by making a curve where it will always have the same distance to the center. Its area can be calculated using the following formula:
Therefore the area of the circular baking tray is:
For similar figures, the ratio of areas is the square of the ratio of linear dimensions. The smaller billboard requires .. (4/5)^2 * 250 ft^2 = 160 ft^ of material.
