Name:



Name:

The Ken Similarity Project

Geometry

You are going to “scale” a Ken doll to human size. This means you will calculate the dimensions of a doll that is the size (scale) of a person. Keep in mind the following. An “average” man in the United States has the following measurements:

▪ Height: 70 inches

▪ Foot length: 10.5 inches

▪ Leg inseam: 34 inches

The measurements of the Ken doll are included in the table below. Your job is to determine the measurements of the doll if he were scaled to the height, foot length, or leg inseam of an “average” man in the United States. Ask a male volunteer who is approximately 70 inches tall to provide an additional measurement such as arm length or shoulder width and do some additional calculations.

| | |Scale by “average” |Scale by “average” |Scale by “average” |Scale by “average” |

|(all in inches) |Ken |height |foot length |inseam |choice |

|Chest circumference |6.0 | | | | |

|Waist circumference |4.75 | | | | |

|Hip circumference |5.75 | | | | |

|Finger length |0.75 | | | | |

|Head circumference |4.5 | | | | |

|Shoulder width |3.5 | | | | |

|Arm length |3.5 | | | | |

|Leg inseam |5.5 | | |34 | |

|Foot length |1.5 | |10.5 | | |

|Height |12 |70 | | | |

QUESTIONS

1. Did your findings match your expectations? Why or why not?

2. Take a stance and write a sentence in support of either; use mathematics to back up your statement:

▪ Mattel’s Point of View: The doll is proportioned like a normal adult man.

▪ Mattel-Critics’ Point of View: The doll does not match the average adult human man proportions.

(continued on reverse)

3. Do you think this assignment raises any important issues? What do you think about the issue? Use complete sentences and write a paragraph to support your answer.

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