SurfaceArea

SurfaceArea[reg] gives the surface area of the three-dimensional region reg.

SurfaceArea[{x1,…,xn},{s,smin,ssmax},{t,tmin,tmax},{u,umin,umax}] gives the surface area of the parametrized region whose Cartesian coordinates xi are functions of s, t, u.

SurfaceArea[{x1,…,xn},{s,smin,ssmax},{t,tmin,tmax},{u,umin,umax},chart] interprets the xi as coordinates in the specified coordinate chart.

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