A group of parents want to double the area of a playground. The proposed diagram shows both the width and the length of the existing playground doubled. They ask you to comment on their proposal. What would you say?

Question

directrix · Answer

If x and y are the lengths of the current playground, the area is x*y = xy.

Once the length and width are doubled, the area is 2x * 2y = 4xy.

So what do you think about the parents' plan?

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