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noname [10]
3 years ago
6

Find the altitude of the triangle with a side of 18. Put into sqrt.

Mathematics
1 answer:
ira [324]3 years ago
3 0
<h2>15 58</h2>

Step-by-step explanation:

BD = DC = 1/2 BC ---> AD is median ( because in equilateral triangle altitude equals to median )

so, therefore

AB = 18 (given)

BD = 1/2 BC

BD = 1/2 × 18

BD = 9

AB² = AD² + BD² ---( by pythagoras theorm)

18² = AD² + 9²

324 = AD² + 81

324 - 81 = AD²

243 = AD²

then,

AD = √243

AD = 15 58

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Step-by-step explanation:

Hope this helps you

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3 years ago
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