# Lesson 15 Design Your Own Robot

Let’s use perimeter and area to design robots.

## Warm-up What Do You Know About …?

What do you know about area and perimeter?

## Activity 1 Create Your Own Robot

Create your own robot with these specifications. Explain or show your work so it is clear your robot meets the required specifications.

Each body part must be a rectangle.

Head: perimeter of 36 units

Neck: perimeter of 8 units

Body: perimeter of 64 units

Each arm: perimeter of 24 units

Each leg: perimeter of 32 units

Include one more rectangular feature of your choice on your robot.

Find the area of each of your robot’s body parts.

Find the total area of your robot.

Gallery Walk: As you visit the robots with your partner, discuss the different areas that can be created with rectangles that have the same perimeter.

## Practice Problem

## Problem 1

The body of your robot has a perimeter of 64 units. What were some different lengths and widths you could choose that fit on the grid?

The head has a perimeter of 36 units. What were some different lengths and widths you could choose for the head that fit on the grid?