document.write( "Question 98263: A girl stands 400 ft. from a tree. With her eye at ground level she sights along a yard stick and finds the top of the yard stick coincides with the top of the tree when the bottom of the yard stick is 4 feet from her eye. Find the height of the tree. \n" ); document.write( "
Algebra.Com's Answer #71437 by checkley71(8403)![]() ![]() ![]() You can put this solution on YOUR website! 3/4=x/400 \n" ); document.write( "4x=1200 \n" ); document.write( "x=1200/4 \n" ); document.write( "x=300 feet to the top of the tree. \n" ); document.write( "proof \n" ); document.write( "draw a triangle with the base=400, the distance from the eye to the bottom of the yard stick=4 feet & the height of the yard stick=3 feet. \n" ); document.write( "now you have a 3 by 4 right triangle and an x by 400 triangle. \n" ); document.write( "these are similiar triangles whose sides are proportional: \n" ); document.write( "3:4, 300:400 \n" ); document.write( " \n" ); document.write( " |