SurfaceArea

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

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

Examples

SurfaceArea[Sphere[]]

SurfaceArea[Cylinder[{{0, 0, 0}, {0, 0, 1}}, 1]]

Please visit the official Wolfram Language Reference for more details.