Which of the two assertions were truly made by the author and which are made up? A) when the day of departure came, between her two customs of laughing and crying

1) сторона а=8√3

    радиус вписанной окружности r=a√3/6=8√3*√3/6=4

2)радиус вписанной окружности r=a√3/6

   сторона а=6r/√3=6*2/√3=4√3

   площадь S=1/2*a^2*sin60=a^2√3/4=(4√3)^2√3/4=12√3

3)P3 = 3*на корень из 3-ёх. Найти Р4--непонятно напиши в личку

4)