I believe the answer is A
Answer:
Step-by-step explanation:
Rewrite this as

Knowing that i-squared = -1:

Both i-squared and 100 are perfect squares, so this simplifies to
±10i
Answer:
So do you already have the answer? Also 1/20 looks right.
Step-by-step explanation:
Answer:
Area of the circle= π(27.8²)
Step-by-step explanation: