tolong dijawab no 17 sampai 20 pakai cara

17. sisi =
[tex]4( \sqrt{6} + \sqrt{2} )[/tex]
tinggi =
[tex]2( \sqrt{6} + \sqrt{2} )[/tex]
Luas=
[tex]12 \times \frac{sisi \times tinggi}{2} = 192[/tex]
18.
[tex]5( \sqrt{6} - \sqrt{2} )[/tex]
[tex] \frac{5}{2} ( \sqrt{6} + \sqrt{2} )[/tex]
300