251.2
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Area of a circle = pi*r2 1256 m2 pi * r2 1256/pi = r2 sqrt(399.797) = r = 19.99 meters ==============Could call this 20 meters in radius.
How many stamps are needed to send a letter from Texas to Alaska?
2 times 2 times 5 times x times y
2 times length times 2 times width
2 times 2 to the power of 30 is 2,147,483,648.