Most wire or string is made with a circular cross section of some particular radius and diameter. The area of that cross section is the well known A = pi*R² which is colloquially pronounced as “pie ...

Recently, a new device based on an oscillometric method has been developed for the measurement of brachial artery cross-sectional area, which is virtually identical to the diameter. This measurement ...

A prism has a constant cross-section throughout its length. When the cross-section is a triangle, the prism is called a triangular prism. When the cross-section is a hexagon, the prism is called a ...