Question 1170405
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Since the equation of a circle is x^2+y^2 = r^2, the 4225 and 1444 are the squares of the radii of the two circles.<br>
The area of each circle is pi times radius squared; so the difference in the areas of the two circles is<br>
{{{(pi)(4225)-(pi)(1444) = (2781)pi}}}<br>