minta tolong nomor 35 yaa,pake cara :

Permukaan kubus = 5× (20)² = 5× 400 = 2000
Permukaan segitiga = 4× (½a × t) = 4× (½.20 × 24) = 4× 240 = 960
→ a= 20
→ tinggi dicari menggunakan pythagoras = √26² - 10² = √576 = 24
Luas Perm. = 2000+960 = 2960