The point is what would the formula be if TAU replaced PI in equations. There are more, but if I place them here, they won't be used in calculations.

Enter height:  

Enter first radius:  

Enter second radius:  

Calculations for PI

circle circumference:  

C = 2πr  

circle area:  

A = πr²  

cylinder volume:  

V = πr²h  

cylinder surface area:  

S =2πrh  

right cone volume:  

V =1/3πr²h  

right cone surface area:  

S =πr√(r²+h²)  

sphere volume:  

V= 4πr²  

sphere surface area:  

S =4/3πr³  

Ring area  

A = π(R²-r²)  

Cone frustum volume  

V = 1/3πh(r²+rR+R²)  

Calculations for TAU

circle circumference:  

C = τr  

circle area:  

A = 1/2τr²  

cylinder volume:  

V = 1/2τr²h  

cylinder surface area:  

S = τrh  

right cone volume:  

V = 1/6τr²h  

right cone surface area:  

S = 1/2τr√(r²+h²)  

sphere volume:  

V = 2/3τr³  

sphere surface area:  

S = 2τr²  

Ring area  

A = 1/2τ(R²-r²)  

Cone frustum volume  

V = 1/6τh(r²+rR+R²)  

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