I need number 2 I need help fast

Answer:
B. 70
Step-by-step explanation:
its dimensions are :
45 , 35 , 24
its dimensions are :
45 + 45 , x , 24 + 24
= 90 , x , 48
from the dimensions given we can notice that :
bigger triangle dimensions are = 2 * smaller triangle dimensions
therefore to find the value of x :
x = 35 * 2