180(# of sides - 2) divided by the # of sides is equal to the degree of its interior angle.
So 12 sides.
Answer:
I believe its Calculus
Step-by-step explanation:
Answer:

Step-by-step explanation:

Answer:
R = 4.2cm and D = 8.4cm
Step-by-step explanation:
The radius is 3.2 and the diameter is always twice much so its 8.4