Answer:
Lateral : 21
surface : 39
Step-by-step explanation:
I think that this is correct. :)
Answer:
X >= 1
Step-by-step explanation:
Answer:
24
Step-by-step explanation:
use Pythagoras theorem
a^2 + b^2 = c^2
18^2+b^2=30^2
b^2 = 30^2 - 18^2
b = √576 =24