4.2.8

Calculations - Surface Area

Test yourself

Surface Area

Don't think we forgot about surface area formulae!!

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Cube

  • A cube of side length 3cm has 6 faces each with area 9cm2 so the total surface area is 54cm2.
  • Drawing a net can be helpful for calculating the total area.
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Sphere

  • The surface area of a sphere is:
    • Area = 4πr2
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Cylinder

  • The surface area of a cylinder is: Area = 2πrh + 2πr2
  • The length of the rectangular surface is the circumference of the base.
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Rectangular solid

  • The surface of a rectangular solid is: Area = 2lh + 2lw + 2w
  • Where l is length, h is height, w is width.

Jump to other topics

1Cell Structure

2Biological Molecules

3Enzymes

4Cell Membranes & Transport

5The Mitotic Cell Cycle

6Nucleic Acids & Protein Synthesis

7Transport in Plants

8Transport in Mammals

9Gas Exchange

10Infectious Diseases

11Immunity

12Energy & Respiration (A2 Only)

13Photosynthesis (A2 Only)

14Homeostasis (A2 Only)

15Control & Coordination (A2 Only)

16Inherited Change (A2 Only)

17Selection & Evolution (A2 Only)

18Classification & Conservation (A2 Only)

19Genetic Technology (A2 Only)

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