### Home > CCAA > Chapter 4 Unit 3 > Lesson CC2: 4.2.4 > Problem 4-64

4-64.

CECIL’S LATEST TRICK

To amaze the audience, Cecil set up four tightropes in a rectangle, each connected at a pole as shown in the diagram at right. A ladder down from the ropes is located at point .

If Cecil starts at point

and must travel completely around the rectangle, how far must Cecil travel?The distance Cecil must travel is the perimeter of the rectangle made by the four tightropes.

feet How can Cecil’s distance be represented by an expression?

Perimeter can be written as

. Use this expression, substituting the appropriate values for ''width'' and ''length.''

vertexA | |||

left edge | rectangle interior | rectangle interior | rectangle interior |

rectangle interior | rectangle interior | rectangle interior | |

bottom edge |