ISEE Word Problems Question 121: Answer and Explanation
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Question: 121
3. In the figure below, the largest possible circle is cut out of a square piece of tin. The area of the remaining piece of tin is approximately (in square inches)
- A. 0.14
- B. 0.75
- C. 0.86
- D. 3.14
Correct Answer: C
Explanation:
The correct answer is (C). The area of a square = s2
The area of this square = 22 = 4
The area of a circle = π o r2
The area of this circle 
The difference between the area of this square and the area of this circle is 4 - 3.14 = 0.86