7/25/2023 0 Comments Hecta acre to acre![]() ![]() There are several varieties of this instrument, including linear and polar types. PlanimeterĪreas can also be measured by a device called planimeter. The surface area of the Moon is about 3.793 x 10⁷ square kilometers, which is about 13 times smaller than the Earth. Surface areas of astronomical objects are approximately 6.088 x 10¹² square kilometers for the Sun, and about 5.1 x 10⁸ square kilometers for the Earth, which is roughly 12 times smaller than the Sun. If we compare the area of a circle and the surface area of a sphere with same radius, the area of the circle would be four times smaller. A sphere cannot be flattened in this way instead its surface area is calculated by finding the product of 4π and the squared radius. To calculate the surface area of simple structures such as prisms, one can flatten the solid surface onto a plane and use the formulas above. The surface area of the Moon is about 3.793 x 10⁷ square kilometers Calculating Surface Area Ellipse: product of the semi-axes and π.Circle: product of the radius squared and π.Trapezoid: sum of the two parallel opposite sides divided by two and multiplied by the height, as measured between these two sides.Parallelogram: product of its side and height, as measured from that side to the opposite side.Equilateral triangle: square root of three, divided by four and multiplied by its side, squared.The formula is: A = ½ab sin(α), where a and b are the sides, and α is the angle between them. Triangle (given two sides and the angle between them): one half of the product of its sides, multiplied by the sine of the angle that they form.The formula is: A = ½ah, where a is the side and h is the height. Triangle (given side and height): one half of the product of its side and height, as measured from that side to the opposite edge.Calculations for complicated shapes are done using multivariable calculus. Another strategy for calculating area, in particularly for polygons, is dividing a polygon into triangles and using the properties and the area calculation formulas for triangles. Some of the formulas for calculating the area of geometrical shapes are derived using this approach. This method is convenient because the area of a square is easy to calculate. The area of simple objects can be calculated through a comparison with a square, the size of which is known. Many countries use local units equal to a hectare but under a different name. Hectares have been used since the French Revolution and are still in use today in the European Union. One hectare equals a hundred ares or 10,000 square meters. Hectares are also used to measure real estate, in particular, land area. ![]() ![]() ![]() It is often used to measure smaller properties and public spaces where a hectare is too large. It is known under different names in some regions. AreĪn are is a unit used to measure land in some European countries, CIS countries, and in Indonesia. In the complex plane they will be 0, 1, i, and i + 1, where i is the imaginary number. In the Cartesian plane, this square usually has coordinates of (0,0), (0,1), (1,0), and (1,1) in the real plane. As a result, the area of a unit square is one. Unit SquareĪ unit square is a square with the sides one unit long. It is defined as the area of a square with sides of one meter. Units Square MeterĪ square meter is the SI unit of area. Population density calculations also use area: for humans, population density is the number of people per unit area. In geography, it is used to measure and compare geographical objects such as cities, lakes, or countries. It is used in mathematics, engineering, medicine, and other sciences, for example, to calculate cross-section areas of cells, atoms, or pipes (such as blood vessels or water pipes). An are is a unit used to measure land in some European countries and in IndonesiaĪrea is a measure of the amount of space inside a two-dimensional boundary. ![]()
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