Review calculations used determine % of a number, converting percentage to decimals. Review formulas to find the circumference of a circle and the area. Show the derivation of the Pythagoras theorem, and work 2-3 examples to reinforce the calculations. Work examples to determine the area of a circle given the radius and the circumference of the circle given the radius. Work examples which can solve for any of the sides of the right triangle if 2 of the 3 sides are given