surface area
the sum of the areas of all the faces of a 3-dimentional figure
Surface area is the total area that the surface of an object occupies. It is measured in square units, such as square meters or square feet. The surface area of an object can be calculated by finding the sum of the areas of each face or surface that makes up the object.
To calculate the surface area of a simpler object, such as a cube or rectangular prism, you can use the following formula:
Surface Area = 2lw + 2lh + 2wh
Where l, w, and h stand for the length, width, and height of the object, respectively.
For more complex objects, such as a sphere or cylinder, different formulas are needed. For example, to calculate the surface area of a sphere, you can use the formula:
Surface Area = 4πr²
Where r stands for the radius of the sphere and π (pi) is approximately 3.14159.
To calculate the surface area of a cylinder, you can use the formula:
Surface Area = 2πr² + 2πrh
Where r stands for the radius of the circular base of the cylinder, and h stands for the height of the cylinder.
It is important to note that when calculating the surface area of an object, units should be consistent. For example, if the length, width, and height are measured in meters, the surface area should be expressed in square meters.
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