document.write( "Question 980028: ratio of length,breath and height of a room is 5:4:2. If area of four walls is 144 sq. metres.Find diagonal of the room? \n" ); document.write( "
Algebra.Com's Answer #601230 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! ratio to add to 144 is some x, 5x:4x:2x ;; x units are meters.\r \n" ); document.write( "\n" ); document.write( "One pair of walls has area 2*10x^2)=20x^2 m^2 \n" ); document.write( "The other pair of walls has area 2*8x^2=16x^2 m^2 \n" ); document.write( "If x=2, one pair has area 80; the other has area 64 m^2 \n" ); document.write( "Therefore the ratio in the room is 10:8:4 m.\r \n" ); document.write( "\n" ); document.write( "The floor is 10 x 8 with diagonal sqrt (100+64)=sqrt (164). Don't reduce it.\r \n" ); document.write( "\n" ); document.write( "The room diagonal uses the floor diagonal as one leg, and the height as a second leg. The diagonal across the room is the square root of each of those squared.\r \n" ); document.write( "\n" ); document.write( "The first is 164, the height is 16, and their sum is 180. \n" ); document.write( "Take the square root of (180 m^2), and the answer is 6 sqrt(5) m or 13.4 meters. \n" ); document.write( " |