Angular measure of a circle: 2*pi radians.
Circumference of a circle with diameter d units: d*pi units
Heron's formula
A cylinder has two circles as its bases.
Are congruent circles.
Any two non-overlapping circles.
Congruent circles
Geometry and art are two possibilities.
A rectangle and two circles.
Heron's formula
yes
With two circles you can get 8 and ∞.
Diarthrotic means pertaining to two joints.
Pulmonary is an adjective meaning pertaining to the lungs. Respiratory can also be used, but refers to the system of breathing generally rather than the lungs specifically.
A cylinder has two circles as its bases.
Concentric circles.
a cylinder has two faces that are circles
Two circles with a square on top
Concentric circles