AREA, SURFACE AREA AND VOLUME - Pearson:面积,表面积和体积...
Area formulas Square A = s 2 s Rectangle A = lb b l Triangle A = 1 2 bh or = 2 A bh h b Trapezium A = + ( ) 1 2 h a b h a b Parallelogram A = bh h b Rhombus and Kite A = 1 2 xy x y y x x and y are the lengths of the diagonals Circle A = πr 2 r ...