There are 2 formula to find the circumference of a circle.



is approximately 3.14
r is radius
D is diameter
and just a side note,

Hope that formula helps you :)
Answer:
2.99924 in
Step-by-step explanation:
Volume of a cone
V = pi x r^2 x h/3
So to solve this problem you plug in the number we already have which is the volume and the height
103.62 = pi x r^2 x 11/3
28.26 = pi x r^2
28.26/pi = r^2
= r ≈ 2.99924
Do you have the whole question? The problem that you gave does not have a problem....
Answer:
Step-by-step explanation:
Sin(30o) = 0.5 or 1/2
Sin(60o) = sqrt(3)/2
So the statement is false