History of Hindu Mathematics: A Source Book v2.c17.s19.t1.8

v2.c17.s19.t1.8

"For a trapezium with three equal sides (proceed) as in the case of the isosceles trapezium with (the rectangle formed from) the quotient of the area of a generated rectangle divided by the square-root of its side multiplied by the difference of its elements and divisor; and that (formed) from the side and upright."