https://tcs.nju.edu.cn/wiki/api.php?action=feedcontributions&feedformat=atom&user=86.179.241.63 2026-05-01T12:43:44Z User contributions MediaWiki 1.45.3 https://tcs.nju.edu.cn/wiki/index.php?title=Area&diff=7444 2017-02-05T11:02:53Z

<p>86.179.241.63: Typo</p> <hr /> <div>'''Area''' is the amount of [[Space (physics)|space]] a [[two dimensional]] (flat) surface takes up. It is useful because it is how much of a [[material]] is needed to make a hollow container; for example, how much [[wood]] is needed to make a [[wardrobe]].<br /> <br /> You can use different [[formula]]s to find the area of different [[shape]]s.<br /> <br /> * Area of a [[rectangle]] is the [[length]] of any two touching sides [[multiply|multiplied]] together. In other words, length times width.<br /> * Area of a [[triangle]] is half of the base multiplied by the [[perpendicular]] height. This can be found using the [[trigonometry]] formula, &lt;math&gt;A = 1/2 ab \sin c.&lt;/math&gt;.<br /> * Area of a [[circle]]: &lt;math&gt;A = \pi r^2&lt;/math&gt;.<br /> <br /> The area of a flat object is related to the [[surface area]] and [[volume]] of a three-dimensional object.<br /> <br /> The area under a [[curve]] can be found using [[integral|integration]], from [[calculus]].<br /> <br /> Some units used to measure area are [[square mile]] and [[square kilometre]].<br /> <br /> {{Math-stub}}<br /> <br /> [[Category:Geometry]]</div>

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