請教一題三角題目
邊長4的正六邊形\(ABCDEF\),正\(\Delta PQR\)內接於此正六邊形,且\(P\)在\(\overline{AB}\)上,\(Q\)在\(\overline{CD}\)上,\(R\)在\(\overline{EF}\)上,已知\(\overline{AP}:\overline{PB}=3:1\),則正\(\Delta PQR\)的面積?
答案:\(\displaystyle \frac{39\sqrt{3}}{4}\)
如附件,求三角形面積,請問此題要如何解,謝謝!