The sum of the measures of all exterior angle in a polygon with n sides is always 
.
Nonagon is a polygon with 9 sides. If this nonagon is regular or equiangular, then all interior angle are congruent, and therefore all exterior angles are congruent. Then the measure of each exterior angle is 
.
Answer:
138
Step-by-step explanation:
152+125=277
277-135=142
around 138
Answer:
fraction 4/12 or 1/3
decimal .333333333
percent 33%.333333
Step-by-step explanation:
Answer:
25π
Step-by-step explanation:
1) for whole circuit: A=π*r², where r - radius of the given circle;
2) for a quater of the circuit: A=πr²/4;
3) finally, A=π*100/4=25π.
Answer:
Step-by-step explanation:
The first step is to find the slant height of the cone. Using the pythagorean theorem, you can find that 
cm. Plugging this into the equation, you get 
. Hope this helps!
