document.write( "Question 931182: Please help,
\n" );
document.write( " A rectangle with diagnols 20cm has sides in the ratio 2:1. Find the: a) Perimeter b) Area\r
\n" );
document.write( "\n" );
document.write( "Thank you :) \n" );
document.write( "
Algebra.Com's Answer #565490 by rothauserc(4718)![]() ![]() You can put this solution on YOUR website! let x be a side then the sides are x, 2x and we have \n" ); document.write( "x^2 + (2x)^2 = 20^2 \n" ); document.write( "x^2 + 4x^2 = 400 \n" ); document.write( "5x^2 = 400 \n" ); document.write( "x^2 = 80 \n" ); document.write( "x = square root (80) = 8.94427191 cm \n" ); document.write( "2x = 17.88854382 cm \n" ); document.write( "Perimeter = 2x + 4x = 6x = 6*8.94427191 = 53.66563146 cm \n" ); document.write( "Area = x * 2x = 2x^2 = 2*(8.94427191)^2 = 160 cm^2 \n" ); document.write( " |