New radiocarbon dating and human remains, red deer antlers, and charcoal found in the area puts this ancient stone circle near Dorchester at 3,200 BCE–roughly 300 years older than Stonehenge.

The diagrams of shapes and objects in this topic are illustrative ... The number \( \pi \) is defined as the ratio \( \pi = \frac{\textit{circumference of a circle}}{\textit{diameter of the circle}} = ...