Let's model the problem like a circle.
The circumference of a circle is given by:

Where,
r: radius of the circle.
Clearing the radius we have:

Then, replacing values we have:


Answer:
The best approximation for the radius of the tin is:

Answer:
6 matches
Step-by-step explanation:
Let’s call the teams A B C D
A will play B C D = 3 matches
B will play only C and D as it already played A, making 2 matches
C will play D, making 1 match
D has already played all
Total number of matches is thus 3 + 2 + 1 = 6 matches
3/4 is the simplest form of 9/12
Answer:
Use the two point formula: y-y¹/x-x¹ = y²-y¹/x²-x¹ to find the equation of a line through two given points.