SAT Math Multiple Choice Practice Question 419: Answer and Explanation

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Question: 419

2.

In the figure above, the perimeter of square A is the perimeter of square B, and the perimeter of square B is the perimeter of square C. If the area of square A is 16, what is the area of square C ?

A. 24
B. 36
C. 64
D. 72
E. 81

Correct Answer: E

Explanation:

E If the area of square A is 16, the length of each side is 4, and the perimeter is 16. You are told that this is of B's perimeter, which you can calculate:

Now that you know the perimeter of B, you can calculate the perimeter of C:

If the perimeter of C is 36, each side is 9, and the area of C is 92, or 81. If you chose B, you need to read the question more carefully.

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