Answer:
Well if it volume it would be 16 × 2 which is 32 then that would 32 × 16=512
but you wrote area so it would be 16
As we know,

now, let's plug the given values to find a² + b²
The second one, and you as well ☺️
Answer:
Common ratio: -3
Geometric sequence: an=5(-3)^n-1
Step-by-step explanation:
Each number multiplied by -3 gets the product of the next number. (5*-3= -15)