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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Algebra.Com's Answer #216534 by ankor@dixie-net.com(22740)\"\" \"About 
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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.
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\n" ); document.write( "We can use the property of two similar triangles. Corresponding sides have same ratios.
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\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
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\n" ); document.write( "let t = height of the tree
\n" ); document.write( "tree shadow given as 31.05 m
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\n" ); document.write( "person height = 1.51 m
\n" ); document.write( "person shadow: 31.05 - 20.70 = 10.35 m
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\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( "\"t%2F1.51\" = \"31.05%2F10.35\"
\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 = \"46.8855%2F10.35\"
\n" ); document.write( "t = 4.53 m is the height of the tree
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\n" ); document.write( "Did this make sense to you? Drawing a diagram of this can help.
\n" ); document.write( "Any questions about it?
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