Question

I need help with a question

Answer 1

does it ask for scientific notation?

Answer 2

10 only has 1 significant figure

Answer 3

have you tried 11?

Answer 4

(10.5 rounds up to 11)

Answer 5

if 11 doesn't work, try 10.

with a period after it

Answer 6

Yes, it is right. THANK YOU. <3

Answer 7

Do you know why you need a period after it?

Answer 8

@unbelievableDreams
Without the period, the last zero is not significant (just one).
With the period, all trailing zeros are significant (make 2)