minta bantuannya ya.MAt no 1,2,7,8

1.
d = √13² - 5²
d = √169 - 25
d = √144
d = 12 cm

2.
L∆ = ½ × 24 × 25 = 300 cm²

7.
AC = √3² + 3² = √18
AD = √(√18)² + 3² = √27
AE = √(√27)² + 3² = √36 = 6

8.
5² = (x√3)² + x²
25 = 3x² + x²
x² = 6,25
x = √6,25 = 2,5

jarak = 2,5√3 = 4,33 m

semoga membantu :)