Calculate the complete surface area of eight closed solids, including boxes, spheres, cylinders, cones and pyramids.
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0.000001 – 1000000000
0.000001 – 1000000000
0.000001 – 1000000000
Total closed surface area
94.0000 square units
Includes bases where stated. Cone and pyramid heights are perpendicular, not slant heights. Capsule height is its straight cylindrical section, excluding the rounded ends.
A = 2(lw + lh + wh)
All dimensions must use the same unit; the resulting area uses its square.
Add the areas of all exposed faces. A rectangular box uses 2(lw + lh + wh), a sphere uses 4πr² and a closed cylinder uses 2πr(r + h). The result displays the selected solid’s formula.
A box measuring 3 × 4 × 5 units has surface area 2(12 + 20 + 15) = 94 square units.
A cone requires perpendicular height, not slant height. A capsule requires the length of its straight cylindrical section, excluding its hemispherical ends.
Last updated . Results are estimates for informational purposes only.