Arithmetichard · Past Paper
What is the ratio of the area of a circle to the area of a square if the side of the square equals the diameter of the circle?
Api:4
Bpi:2
C4:pi
D1:1
✓ Correct Answer: A — pi:4
Radius = r, diameter = 2r. Square side = 2r. Area circle = pi*r^2. Area square = (2r)^2 = 4r^2. Ratio = pi:4.
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