document.write( "Question 331713: the base of a triangle is 8cm greater than the height. the area is 42 cm spuared. find the height and length of the base. \n" ); document.write( "
Algebra.Com's Answer #237795 by mananth(16946)![]() ![]() You can put this solution on YOUR website! let height = h \n" ); document.write( "base = h+8 \n" ); document.write( ".. \n" ); document.write( "Area of traingle = 1/2 * base * height \n" ); document.write( "42= 1/2 * h * (h+8) \n" ); document.write( "42=1/2*(h^2+8h) \n" ); document.write( "84= h^2+8h \n" ); document.write( "h^2+8h-84=0 \n" ); document.write( "h^2+14h-6h-84=0 \n" ); document.write( "h(h+14)-6(h+14)=0 \n" ); document.write( "(h+14)(h-6)=0 \n" ); document.write( "h= 6 Or -14 \n" ); document.write( "ignore negative value \n" ); document.write( "h=6 cm \n" ); document.write( "base = h+8=14 cm \n" ); document.write( " |