Consider the graph of the parabola {{MATH_1}} and the line {{MATH_2}} on the interval {{MATH_3}}. A rectangle {{MATH_4}}, with sides parallel to the axes, is constructed so that the two left corners lie on the {{MATH_5}}-axis, the upper right corner lies on the parabola {{MATH_6}}, and the lower right corner lies on the line {{MATH_7}}.