28 cm² refers to an area measurement of 28 square centimeters. It is commonly used in geometry to describe the size of a two-dimensional shape, such as a rectangle or a square. The unit "cm²" indicates that the measurement is in centimeters, with the area being calculated by multiplying length by width in the case of rectangular shapes.
a=\7cm;a=28cm2
1/2 x 8 x 7 = 28cm2
Area of Triangle = 1/2 base x height 28 = 4 x height height = 7 cms