float function ( double arg0 , double arg1 , double arg2 ) { return ( float ) ( ( .5 * arg2 ) * ( arg0 + arg1 ) ) ; }
computes the area of a trapezoid . all the lengths should be of the same unit of measure . concode_field_sep PlaceHolder placeHolder concode_field_sep float getLatitudeCircum concode_elem_sep float getTrapezoidSideLen concode_elem_sep float getDistToEquator