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The lengths of the sides of a triangle are 10, 17 and 21. How long is the altitude of the triangle to longest side?

 Jul 13, 2020
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The lengths of the sides of a triangle are 10, 17, and 21. How long is the altitude of the triangle to the longest side?

 

a = 10           b = 17         c = 21

 

1/   Find semiperimeter    ( s )

 

2/   Find the area of a triangle ( A )

 

3/   Find the height =>        hc =  2A / c  smiley

 Jul 13, 2020

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