Answer:
138.23
Step-by-step explanation:
2πrh+2πr^2=2·π·2·9+2·π·2^2
A straight angle is equal to 180 degrees. 180-80=100. 100-60=40. so y=40. vertical angles are congruent so x=40 degrees.
Answer:
3.60
Step-by-step explanation:
1.80 x 2
Answer:
12x
Step-by-step explanation:
It has no exponent so it is not a polynomial
