Aregion is enclosed by an isosceles triangle with two sides of length s and a base of length b. how far from the base is the center of mass? call the region enclosed by the triangle r. if the constant density is ? and the mass of the region is m, then the x-coordinate of the center of mass is x= the y-coordinate of the center of mass is y describe the sides of the triangle in a coordinate system that simplifies the calculation of these integrals as much as possible. choose the correct answer be o oa. the vertex of the side opposite the base i on the y-axis and the vertices are equidistant from the origin. the base is parallel to the x-axis and the two sides of length s are symmetric about the o b the base is on the x-axis such that one o its endpoints is at the ori ? n. the ver ex opposite the base is in the first quadrant so that the two sides of length s are sm metric about a vertical line to the ? c. one of the sides o length s is on the x-aos such that the vertex opposite the base is at the orign. the other side o length s and the base can be represented by lines with opposite slopes. ight of the y-axis o d. the base is on the x-axis. the vertex opposite the base is on the y-axis so that the two sides of length s are symmetric about the y-axis. let h be the height of the triangle. when the coordinate system is set up as described above, the center of mass is type an ordered pair.) thus, the center of mass is units from the base