document.write( "Question 301899: Julia, who is 1.51 m tall, wishes to find the height of a tree with a shadow 31.05 m long. She walks 20.70 m from the base of the tree along the shadow of the tree until her head is in a position where the tip of her shadow exactly overlaps the end of the tree top's shadow. How tall is the tree? Round to the nearest hundredth.\r
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document.write( "This is a homework question. I have serious problems with word questions dealing with any type of Math. That has always been my weak point. So I am asking for your help. If you can, thank you. I do appreciate any assistance you can give me. \n" );
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Algebra.Com's Answer #216534 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Julia, who is 1.51 m tall, wishes to find the height of a tree with a shadow 31.05 m long. \n" ); document.write( "She walks 20.70 m from the base of the tree along the shadow of the tree until \n" ); document.write( "her head is in a position where the tip of her shadow exactly overlaps the end of the tree top's shadow. \n" ); document.write( "How tall is the tree? Round to the nearest hundredth. \n" ); document.write( ": \n" ); document.write( "We can use the property of two similar triangles. Corresponding sides have same ratios. \n" ); document.write( ": \n" ); document.write( "the triangle formed by the tree, it's shadow, and line to the sun \n" ); document.write( "is similar to: \n" ); document.write( " the triangle formed by the person, her shadow, and line to the sun \n" ); document.write( ": \n" ); document.write( "let t = height of the tree \n" ); document.write( "tree shadow given as 31.05 m \n" ); document.write( "; \n" ); document.write( "person height = 1.51 m \n" ); document.write( "person shadow: 31.05 - 20.70 = 10.35 m \n" ); document.write( ": \n" ); document.write( "A simple ratio equation using corresponding sides of each triangle \n" ); document.write( "tree height:person height = tree shadow:person shadow \n" ); document.write( " \n" ); document.write( "Cross multiply \n" ); document.write( "10.35t = 1.51*31.05 \n" ); document.write( "10.35t = 46.8855 \n" ); document.write( "t = \n" ); document.write( "t = 4.53 m is the height of the tree \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Did this make sense to you? Drawing a diagram of this can help. \n" ); document.write( "Any questions about it? \n" ); document.write( " \n" ); document.write( " |