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Home > MC1 > Chapter 3 > Lesson 3.4.5 > Problem 3-145

3-145.
  1. . Cecelia wants to measure the area of her bedroom floor. Should she use square inches or square feet? Homework Help ✎

    1. Write a sentence to explain which units you think that she should use.

    2. If her room is 12 feet by 15 feet, what is the area of her floor? Show how you get your answer.

Square inches are good for measuring the area of things such as your desk or a piece of paper.
Do you think they would also be good for measuring the area of your room? Make sure to explain your reasoning.

To get you started, here is a generic rectangle representing the area of Cecelia's room.

You can also set the problem up as follows:

15
×12