Find the height of an equilateral triangle having side 18 cm.
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if side is 18 cm then using pythogoras theorem
hypotenuse =18
base=18/2=9
let height be x
according to pythogoras theorem
H*H=B*B+P*P(P is the height)
18*18=9*9+x*x
324=81+x*x
243=x*x
Step-by-step explanation:
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