GCSE Maths Edexcel 1MA1

The following formulae will be provided for students within the relevant examination questions.

Perimeter, area, surface area and volume formulae

Where $r$ is the radius of the sphere or cone, $l$ is the slant height of a cone and $h$ is the perpendicular height of a cone:

Curved surface area of a cone $= \pi rl$

Surface area of a sphere $= 4\pi r^2$

Volume of a sphere $= \dfrac{4}{3}\pi r^3$

Volume of a cone = $\dfrac{1}{3}\pi r^2h$