Area of the trapezoid = 1/2(B+b)h where B= length of the longer side of the trapezoid which is equal to 14 ft b= shorter shorter side of the trapezoid which equal 8 ft h = height of the trapezoid which is equal to 4 ft Area of the trapezoid = 1/2 (14+8)4 Area of the trapezoid yard fence of Duc is 44ft^2