Area is the quantitative characteristic of two-dimensional figure or shape. The unit of area is derived from the length unit. Therefore, every unit of length has a corresponding unit of area. The area may be measured in square kilometers (km²), in square meters (m²), in square centimeters (cm²), in square millimeters (mm²), in square feet (ft²), in square yards (yd²), in square miles (miles²) etc. n the International System of Units (SI), the standard unit of area is the square meter. Without a doubt, area plays an important role in modern mathematics.