oblicz obwod trojkata rownobocznego wiedzac ze promien okregu wpisanego w ten trojkat wynosi :
b)
plis na jutro
r = a√3 / 6
2√3/3 = a√3 / 6
3√3a = 12√3 ||:3√3
a = 4cm
L = 3a
L = 3 * 4cm = 12cm
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r = a√3 / 6
2√3/3 = a√3 / 6
3√3a = 12√3 ||:3√3
a = 4cm
L = 3a
L = 3 * 4cm = 12cm