If you are not familiar with mathematical formulae, they can appear very confusing!  This page is intended to help you with the various formulae used in the IRC Rule:

*  Multiply

<  less than

>  greater than

^2   squared  (eg. 4^2 = 4 squared = 4 x 4)

^3  cubed (eg. 9.5^3 - 9.5 cubed = 9.5 x 9.5 x 9.5)

^0.5  square root  (eg. 25^0.5 = square root of 25 = 5)

m^2   square metres

( )  calculations shown iithin brackets are solved first  eg. 4*(3+3) = 4*6 = 24

If you would like clarification of any the formulae in the IRC Rule, please contact RORC or UNCL who will be able to help you.