document.write( "Question 778559: 7.Show that the circles
\n" ); document.write( "x²+y²-2x-4y+1=0
\n" ); document.write( "x²+y²-2x+6y+1=0
\n" ); document.write( "are tangent externally, find the circumference and area:\r
\n" ); document.write( "\n" ); document.write( " I already converted the equations to standard form and have the circumference and area of both circles. I just want to check if they are correct and also on how to show that they are externally tangent. That's all.\r
\n" ); document.write( "\n" ); document.write( "[(x-1)^2 + (y-2)^2 = 2^2] [Area=12.56] [Circumference=12.56]
\n" ); document.write( "[(x-1)^2 + (y-3)^2 = 3^2] [Area=28.26] [Circumference=18.84]
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #474776 by psbhowmick(878) $\"\"$ $\"About$

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Clue: If the circles are touching each other externally then the distance between their centres will be equal to the sum of the radii of the two circles. \n" ); document.write( "

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