Question

Please help? :3

Answer 1

if radius is \(r\),
then diameter will be \(2r\)

Answer 2

diameter = 2 * radius

Answer 3

since you're given radius = 4,
how much diameter will be ?

Answer 4

By the way today is Pi day!!

Answer 5

8?

Answer 6

yes !
now look at ur options :)

Answer 7

thank you :)

Answer 8

this is interesting xD
In the year 2015, Pi Day will have special significance on 3/14/15 at 9:26:53 a.m. and p.m., with the date and time representing the first 10 digits of π.

Answer 9

wait you should also do circumference thing
it's formula is 2*pi*radius