Find the volume of the pyramid.
Height= 12mm
Base= 63mm squared

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Which part of a 2-column proof is the hypothesis of the conjecture? a) given b) reasons c) prove d) statements ! i think it's b but i'm not quite

Can someone me and explain..will award brainlest!