Twickenham Plating Group

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Technical Plating Services

Surface Area Formulae


Area of a rectangle


Area = length X height

Area of a triangle


Area = (length X height) / 2

Area of a circle


Circumference = 2π X radius OR π X diameter

Area = π(radius)2 OR 0.7854 (diameter)2

Area of a triangle


Surface area = π(diameter)2

Area of a cone


Surface area = (π X diameter X slope) / 2
+ area of base if solid (see circle above).

Area of a cylinder


Surface area = π X diameter X height
+ area of ends if solid (see circle above).

Area of a rectangular prism

Rectangular Prism

Surface area = 2(height X length) + 2(height X width) + 2(length X width)

π = 3.1416

N.B. Whilst every effort has been made to ensure the accuracy of content on, Twickenham Plating Group Ltd cannot accept responsibility for decisions based on information obtained from this site.

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