First of all I will discuss procedure.
1.Select a point among the trees and to complete a 360° sweep around.
2.Count all the trees that are ' in' (tallie), and those that are half tallie and those that are 'out' (non -tallie) should be discounted.
3.Multiply the counted trees with respective basal area factor of the prism to get basal area in m²/hac. THANK YOU
BASAL AREA/ HACTARE BY WEDGE PRISM