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What is the exact area of a circle with a diameter of 25 inches?
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What is the exact area of a circle with a diameter of 25 inches?
Solution:
The diameter of the circle = 2*pi*r = 25 inches
so r = 25/(2*pi) = 3.98 inches
So area = pi* r^2 = 3.14*3.98^2 = 49.76 sq inches