GCSE Maths (Edexcel)

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Surface Area of a Prism

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Geometry and Measures Mensuration and Calculation

Surface Area of a Prism

5:48 Surface Area
Spec G17
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  • Surface area of a prism can be calculated by adding up the area of each of its faces
  • The face opposite the base of a prism has an equal area
  • When the base of a prism is a regular polygon, the remaining rectangular faces will have equal area
  • The total surface area of a prism is equal to the area of the two base faces and the rectangular faces added together
  • When the base of a prism is an irregular shape, the areas of the rectangular sides will be unequal
  • To calculate the surface area of a prism, calculate the area of one base, multiply it by 2 for both bases, determine if the base is a regular polygon, calculate the area of one rectangular face, multiply it by the number of rectangular faces, and finally add together the area of the base faces and the rectangular faces to get the total surface area

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