Surface Area Calculator
Surface Area Calculator
Calcular the surface area of various 3D geometric shapes with step-by-step solutions
Shape Selection
Resultados
Surface Area Calculation
Step-by-Step Solution
Formula Used
Quick Facts
Select a 3D shape and enter dimensions to calculate surface area
Surface Area Formulas Reference
Basic 3D Shapes
Cube: SA = 6s²
s = side length
s = side length
Rectangular Prism: SA = 2(lw + lh + wh)
l = length, w = width, h = height
l = length, w = width, h = height
Sphere: SA = 4πr²
r = radius
r = radius
Cylindrical Shapes
Cylinder: SA = 2πr² + 2πrh
r = radius, h = height
r = radius, h = height
Cone: SA = πr² + πr√(r² + h²)
r = radius, h = height
r = radius, h = height
Hemisphere: SA = 3πr²
r = radius (including base)
r = radius (including base)
Complex Shapes
Pyramid: SA = B + (1/2)Ps
B = base area, P = perimeter, s = slant height
B = base area, P = perimeter, s = slant height
Torus: SA = 4π²Rr
R = major radius, r = minor radius
R = major radius, r = minor radius
Triangular Prism: SA = 2B + Ph
B = base area, P = perimeter, h = height
B = base area, P = perimeter, h = height
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