document.write( "Question 990516: a circle has a center at (8,2). The point (3,7)is in the circle. What is the area of the circle to the nearest tenth of a square unit? \n" ); document.write( "

Algebra.Com's Answer #610520 by KMST(5328) $\"\"$ $\"About$

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The radius, $\"r\"$ , of a circle is the distance between any point on the circumference, and the center of the circle.
\n" ); document.write( "In this case, the point (3,7) must be at a distance $\"r\"$ from point (8,2), and
\n" ); document.write( " $\"r%5E2=%288-3%29%5E2%2B%282-7%29%5E2=5%5E2%2B%28-5%29%5E2=25%2B25=50\"$ .
\n" ); document.write( "The area of a circle with radius $\"r\"$ is $\"pi%2Ar%5E2\"$ ,
\n" ); document.write( "so the area of the circle in the problem is
\n" ); document.write( " $\"pi%2A50=+highlight%28about+170.8%29\"$ (rounded to the nearest tenth of a square unit). \n" ); document.write( "

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