Find the average value of the function over the given solid. The average value of a continuous function f(x, y, z) over a solid region Q is ** F(x, y, z) dv where V is the volume of the solid region Q. f(x, y, z) = x + y + z over the tetrahedron in the first octant with vertices (0, 0, 0), (3, 0, 0), (0, 3, 0) and (0, 0, 3) X 38.183

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A: Introduction:   A function f(x,y) average value as defined by favg=1A(R)∬Rf(x,y)dA   where A(R)…

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