Matching Pairs Match the Geometry FormulasOnline version Match formulas by Shauna Holt 1 Area of a parallelogram 2 Circumference of a circle 3 Area of a Triangle 4 Area of a Circle 5 Volume of a Prism 6 Volume of a cylinder 7 Area of a Trapezoid pi r r h pi r r 1/2 b h b h Area of the Base x height 1/2 b h (b1 + b2) pi d