B = 2h
Area = 121
1/2 × b × h = 121
1/2 × 2h × h = 121
h × h = 121
h^2 = 121
h = square root of 121
h = 11
The height is 11 kilometers
The answer is 45 because 2.50 times 18=45
2, 6, 18, 54, 162, 486...
Start with the number 2.

And continue with that pattern from there.
Multiply all of those and minus and do what is said and of not serch for links ok
Answer:
The LCM of 5, 6, and 9 is the product of all prime numbers on the left, i.e. LCM(5, 6, 9) by division method = 2 × 3 × 3 × 5 = 90.