If you want your pizza shape to be 100 centimeters in length do the following: • Select the pizza shape. • Open the Properties docker and click on the "Curve" icon. • Look at the Length of Curve value (in centimeters) and write down the value. Open your calculator. Type in 100 centimeters and divide that by the Length of Curve value you recorded. Take the resulting quotient and move the decimal two stops to the right. That will be the percentage you need to scale your object to be 100 centimeters in length.