Pembahasan tugas 1

1. a) tinggi = √10² - √6²
= √100 - √36
= √36 = 8
b) Luas permukaan = 2 x 12² + (4 x 12 x 10)
= 288 x 480
= 768
2. 960 = 2 x 1/2 x 25 x 10 + (26+25+10) x t
960 = 250 + 61t
61t = 610
t = 10