tolong dong jawabkan no.18 dgn no19.please pakai cara yah

Nomer 19
Luas=d¹*d²
= (2√3-√2) * (2√3+√2) : 2
=(4*3 - 2):2= (12-2):2= 10:2=5 cm²

Mungkin opsinya yg a itu 5cm, typo mungkin
Maaf baru bisa jawab nomer 19

[tex](2 \sqrt{3 - 2).(2 \sqrt{ + 2) \div 2 = (4.3 - 2)2 = (12 - 2) \div 2 = 10 \div 2 = 5cm2} } [/tex]