the area of an isosceles trapezoid with sides of length 5 and bases of length 11 and 17 is ?
"isosceles trapezoid indicates that if we draw perpendicular from two vertex of the smaller side , the longer side with side 17 will be divided into 3 parts = 11 , 3 and 3 ( making one square and two right triangles ) for the right triangle , height will be = ( 5 ^ 2 - 3 ^ 2 ) ^ 1 / 2 = 4 and the area of trapezoid = 1 / 2 ( b 1 + b 2 ) h = 1 / 2 * 28 * 4 = 56 d is the answer"
quadrilateral_area(const_4, 17, 11)