Answer:
Step-by-step explanation:
It is D, I did this quiz once
Answer:
49π
Step-by-step explanation:
πr^2
π*7^2
49π
Answer:
IM struggling with the too D:
Step-by-step explanation:
Answer:
Option D
Step-by-step explanation:
Option D is not proper scientific notation, as the exponent is not on the 10