Unit Definition (square centimeter) The square centimeter is the CGS unit of area. 1 cm2 equals 100 mm2, 10-4 m2, or approximately 0.155 000 3 in2.
Unit Definition (ping) The ping is a traditional unit of area in Taiwan, equal to about 3.305 square meters (3.953 square yards). This is the same unit known in Korea as the pyong.
