The base of a certain solid is an elliptical region with boundary curve 9x2+25y2=225. Cross-sections perpendicular to the x-axis are isosceies right triangles with hypotenuse in the base. Use the formula V=abA(x)dx to find the volume of the solid. The lower limit of integration is a= The upper limit of integration is b= The base of the triangular cross-section is the following function of x : The height of the triangular cross-section is the following function of x : The aren of the triangular cross-section is A(x)= Thus the volume of the solid is V=