In a Nutshell: Surface Area, Volume and Measurement Formulae
part of the In a Nutshell series on Adrian’s Study Club
Upper/Lower limits
Lower limit = measurement - 1/2 x smallest unit of measurement
Upper limit = measurement + 1/2 x smallest unit of measurement
Cones
Surface Area = 𝜋r^2 + 𝜋rl # where l is the slant height
Volume = 1/3 𝜋r^2h # for oblique cones, the formula is the same, where h is the perpendicular height
Spheres
Surface Area = 4𝜋r^2
Volume = 4/3 𝜋r^3
Square pyramid
Volume = 1/3 lbh