Spheres and Cones
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Key measurements and cone formulae

Key measurements and cone formulae

Labelled cone showing base radius, vertical height, slant height, and the right triangle inside the cone

Spheres and cones are built from circles, so most formulae use the radius rrr. If a question gives the diameter ddd, convert first with r=d2r = \frac{d}{2}r=2d​.

Spheres and Cones Lesson

  1. IGCSE
  2. /Maths
  3. /Spheres and Cones