document.write( "Question 1133041: Hi!\r
\n" ); document.write( "\n" ); document.write( "This is what I have given: The ratio of the radius of sphere A to the radius of sphere B is 3:4.
\n" ); document.write( "I need to find the ratio of the area of sphere A to the area of sphere B.\r
\n" ); document.write( "\n" ); document.write( "Thank you so much!
\n" ); document.write( "

Algebra.Com's Answer #750201 by greenestamps(13200)\"\" \"About 
You can put this solution on YOUR website!


\n" ); document.write( "It is not necessary to use the formula for the surface area of a sphere to answer this question.

\n" ); document.write( "All spheres are similar. For any similar figures, if the ratio of linear measurements between the two is a:b, then the ratio of area measurements between the two is a^2:b^2,and the ratio of volume measurements between the two is a^3:b^3.

\n" ); document.write( "In this problem, since the ratio of the radii of the two spheres is 3:4, the ratio of their surface areas is 3^2:4^2 = 9:16.
\n" ); document.write( "
\n" );