Answer:
20=5*-3+x or 20=-15+x or 35=x
A=pi(c/2)^4=pi^2/c^216=(5pi)^2/8=25pi^2/8
To find the angle measure of a dodecagon you use the formula n-2 (180) / n with n being the number of sides. A dodecagon has 12 sides. So you do 12-2 (180) /2. That equals 10 (180) = 1800 / 12. That equals 150 degrees.
Answer:
-2xy^2+x^2y+x^3+6y^2+3xy
Step-by-step explanation:
