Solving equations Cutting circles You need to cut out two identical circles from a piece of cardboard 9x12 cm. What is the size of the largest circles you can make? Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and active in your browser (Click here to install Java now) Use the dynamic figure to find the largest radius that lets you cut out two complete circles from the rectangle. Construct an equation the solution to which will help you find the maximum radius. Solve the equation and check whether the solution agrees with the dynamic figure.

The difference equation vertex form = constant quadratic function = constant The difference equation Carpenter's problem Playing fields Warm-up Table designs Isosceles triangles Cutting circles Pairs of numbers Exercise 1 Exercise 2 Exercise 3 Exercise 4 Exercise 5 Exercise 6 Exercise 7