The diagonal of a square is . What is the area of a circle inscribed inside this square?
Answer and explanation
Correct answer: D.
- Step 1: In a square of side , diagonal .
- Step 2: An inscribed circle has diameter equal to the side of the square: .
- Step 3: Area of the inscribed circle: .
Answer
36pi cm^2.
Why not the others: '' is area of circumscribed circle; '' uses diameter as radius.
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