document.write( "Question 263141: The equation D=1.2 sqrt h gives the distance, D in miles that a person can see to the horizon from a height, h, in feet. A technician can see 30.4 miles to the horizon from the top of a radio tower. How high is the tower? (Replace the known values in the equation D=1.2 sqrt h) \n" ); document.write( "

Algebra.Com's Answer #193889 by drk(1908) $\"\"$ $\"About$

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we start with our equation of
\n" ); document.write( " $\"D=1.2sqrt%28h%29\"$
\n" ); document.write( "we know that D = 30.4, so we get
\n" ); document.write( " $\"30.4+=+1.2sqrt%28h%29\"$
\n" ); document.write( "step 1 - divide by 1.2 to get
\n" ); document.write( " $\"25.333+=+sqrt%28h%29\"$
\n" ); document.write( "step 2 - square both sides to get
\n" ); document.write( " $\"h+=+641.78\"$ \n" ); document.write( "

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