Please help please help please help please help

The answer is 25.13 because the formula is C=2π4 (2 • pi • 4)

Step-by-step explanation:

Four is the radius so you multiply is by pi and two and get 25.13

here is your answer,

circumference of a circle = 2×pi×r

= 2 × 3.14 × 4

= 8 × 3.14

= 25.12

hope this helps

Lets make it clear: You would have a positive answer when the value you are looking for has to be a positive number. On the other hand you would have a positive and a negative answer when you take the square root of something that doesn't have to be positive. it could be either because when a negative number is squared it becomes positive and when a positive number is squared it stays positive as well.