Write all the possible auxiliary formulae of `A=pi)R^(2)-r^(2))`

Write all the possible related auxiliary formulae from A= pi(R^(2)-r^(2)) .

Auxiliary formula of A=pir^(2) is r=(A)/(pi) .

Write all the auxiliary formulae of A=P(1+(TR)/(100)) .

Directions for questions : State whether the following statements are true or false. Auxiliary formula of A = pi r^(2) is r = (A)/( pi) .

Write the auxiliary formulae related to x^(2)-y^(2)=z^(2) .