tolong dibantu pakai cara ya
Jawab:
Penjelasan dengan langkah-langkah:
Catatan : harap memakai brainly web untuk melihat jawaban dibawah ini jangan pakai app
[tex]s = \dfrac{3\cdot 10\sqrt{2}}{2}=15\sqrt{2}\\\\L = \sqrt{s\cdot (s-a)(s-b)(s-c)}= \sqrt{s\cdot (s-a)^3}\\L = \sqrt{15\sqrt{2}\cdot (15\sqrt{2}-10\sqrt{2})^3}\\L = \sqrt{3\cdot 5\sqrt{2}\cdot (5\sqrt{2})^3}\\L = (5\sqrt{2})^2\cdot \sqrt{3}\\\\\Huge{\boxed{\boxed{\boldsymbol{L = 50\sqrt{3} \mathrm{\; cm^2}}}}[/tex]
Luas segitiga sama sisi = ¼ × s² × √3
L = ¼ × (10√2)² × √3
L = ¼ × (100 × 2) × √3
L = ¼ × 200 × √3
L = 50√3 (D.)
[answer.2.content]
