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2014-06-15T19:00:55+03:00


ap=1/3 *h

h=l√3/2

6=l√3/6

l√3=36

l=36/√3

l=36√3/3

l=12√3

A=l²√3/4

A=(12√3)²√3/4

A=432√3/4

A=108√3



A=l²√3/4

5√3=l²√3/4

l²√3=20√3

l²=20

l=√20

l=2√5


sper ca te-am ajutat


2 5 2
2014-06-15T19:05:41+03:00
L=r√3⇒r=l/√3
a=r/2⇒r=2a
l=2a√3=12√3

A=r²3√3/4=l²/3*3√3/4=l²√3/4⇒l²=4A/√3=20⇒l=√20=2√5
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