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Basal area is the cross-sectional area of trees at breast height (1.3m or 4.5 ft above ground). It is a common way to describe stand density. In forest management, basal area usually refers to merchantable timber and is given on a per hectare or per acre basis. If one cut down all the merchantable trees on an acre at 4.5 feet (1.4 m) off the ...
The formula for the surface area of a sphere is more difficult to derive: because a sphere has nonzero Gaussian curvature, it cannot be flattened out. The formula for the surface area of a sphere was first obtained by Archimedes in his work On the Sphere and Cylinder. The formula is: [6] A = 4πr 2 (sphere), where r is the radius of the sphere.
Similarly, the area of the red region is = () The total area A 1 + A 2 is equal to the area of the bigger rectangle, x 2 y 2 , minus the area of the smaller one, x 1 y 1 :
A 2011 discovery in the Canadian province of New Brunswick yielded the earliest known plants to have grown wood, approximately 395 to 400 million years ago. [5] [6]Wood can be dated by carbon dating and in some species by dendrochronology to determine when a wooden object was created.
Robert William Unser [1] (February 20, 1934 – May 2, 2021) was an American automobile racer.At his induction into the Motorsports Hall of Fame of America in 1994, he had the fourth most IndyCar Series wins at 35 (behind his brother Al, A. J. Foyt, and Mario Andretti). [2]
In 1544 or 1545, Parr had started to organise an English translation of Erasmus's Paraphrases Upon the New Testament, and the massive volume was finally printed in January 1548. Parr had enlisted Nicholas Udall, Thomas Keyes and Mary Tudor to translate different sections and she may have produced the paraphrase of Matthew. In July 1547 the ...
Unknown yam variety, most likely of the alata species. White yams at a retail market in Brixton, England, 2004. Yam is the common name for some plant species in the genus Dioscorea (family Dioscoreaceae) that form edible tubers (some other species in the genus being toxic).
David Marshall Coulthard (born 27 March 1971) is a British former racing driver and broadcaster from Scotland, who competed in Formula One from 1994 to 2008.Nicknamed "DC", Coulthard was runner-up in the Formula One World Drivers' Championship in 2001 with McLaren, and won 13 Grands Prix across 15 seasons.