Horizontal position (km) -1.1 - 1 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 Gravity (m Gal) 0.271 0.315 0.369 0.425 0.495 0.564 0.645 0.717 0.779 0.854 0.885 0.892 0.885 0.842 0.784 0.726 0.64 0.564 0.493 0.428 0.367 0.318 0.273 0.0236 From a deep-sea geophysical exploration for the base metal in the Atlantic Ocean, where het following gravity data were obtained by gravimeter mounted on a gyroscopically stabilized platform within the vessel, determine (a) the depth ot the structure, (b) its approximate vertica extent, and (c) the mass of the causative body, using a density contrast of 2.67 g/cm'anc gravitational constant, G of 6.67 x 10-' Nm