prosze o pomoc w tych 3 zadaniach bardzo prosze mam to juz na jutro miec

zad 2 a) x = √[4² + (2√5)²] = √(16 + 20) = √36 = 6 b) y = √(6² -4²) = √(36 - 16) = √20 = 2√5 c) z = √(10² - 8²) = √(100 - 64) = √36 = 6 d) c = √[3² + (10 - 4)²] = √(9 + 36) = √45 = 3√5 zad 3 a) h = a√3/2 = 8√3/2 = 4√3 b) d - przekątna = a√2 = 6√2 * √2 = 6 * 2 = 12 c) h = a√3/2 2h = a√3 a = 2h/√3 = 2 * 6/√3 = 12/√3 = 12√3/3 = 4√3 d) d - przekątna = a√2 8 = a√2 a = 8/√2 = 8√2/2 = 4√2 zad 4 a) P - pole = 8 * 2/2 = 4 * 2 = 8 b) P - pole = a²√3/4 = 6²√3/4 = 36√3/4 = 9√3 c) a - drugi bok = √(12² - 8²) = √(144 - 64) = √80 = 4√5 P - pole = 8 * 4√5 = 32√5 d) P - pole = 4 * 7 * sin45° = 28 * √2/2 = 14√2