Geometry

Doubling the length of each side of a square will produce a square that is 4x bigger. This is because a square is a 2-dimensional object, and we are doubling the sides (2²). Similarly, if we double the radius of a sphere, it's volume scales by 8x, since it is in 3-dimensional space (2³)

Unit conversion of area

A common mistake is to think that 1km2=1,000m21 km^2 = 1,000 m^2

  • in fact, 1km2=1,000,000m21 km^2 = 1,000,000 m^2

Children
  1. Circle
  2. Cone
  3. Trigonometry

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