Circle Formulas? (Area vs Circ.) Education Community › Mathematics › Grade 8 Mathematics › Circle Formulas? (Area vs Circ.) This topic contains 1 reply, has 2 voices, and was last updated by Cameron Roache 5 months, 2 weeks ago. Author Posts November 6, 2018 at 9:07 PM #612 Hloni PenaneParticipant Intermediate Colearner I know that the two formulas are 2(pi) and (pi)(r)^2, but which one of these is for area and which one is for circumference? November 6, 2018 at 10:45 PM #643 Cameron RoacheParticipant Intermediate Colearner Area = (pi)(r)^2 Circumference = 2(pi)(r) Author Posts You must be logged in to reply to this topic.