answers_about_geometry
C = 81 pi = 2pi r
Hence
2 pi r = 81pi
r = 81 pi / 2 pi
Cancel down
r สล็อตเว็บตรง = 40.5
A = pi r^(2)
A = pi ( 40.5)^(2)
A = 1640.25 pi units^(2)
answers_about_geometry.txt · Last modified: by kaleymcnair999