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Z malego trojkata mamy:
a√3 /2 , gdzie a=10 (promien)
10√3 /2 = 5√3
5√3 = ½ a (duzego trojkata)
a= 2*5√3
a=10√3 - bok naszego trojkata
Obliczam pole trojkata rownobocznego:
P=a²√3/4
P=(10√3)²/4
P=300√3/4
P=75√3 (cm²)
:)
R=10cm
R=a√3:3
10=a√3:3
30=a√3
a=10√3
P=a²√3/4
P=(10√3)²/4
P=300√3/4
P=75√3 (cm²)
R=a√3:3
10=a√3:3
30=a√3
a=10√3
P=a²√3/4
P=(10√3)²/4
P=300√3/4
P=75√3 (cm²)