Answer:
it is b i did it on eg 2020
Step-by-step explanation:
56* angles scale regardless of size 90* @ 9mmx9mm is still 90* in 9kmx9km
NAMASTE :)
0.00000000005
= 5 ×

Count the Digits after decimal.
We use minus (-) in power as the digit is in left side of decimal
If they are in right side then we use (+) plus sign in power.
The mean, since it's the average of whatever your data is.
I hope you find my answer helpful I got 39,000.