To calculate the surface area of an object, you first need to determine all of its individual faces and then add up the areas of each face. Let's use a cube as an example.
A cube has six sides, each of which is a square. To find the surface area of a cube, you would find the area of one face and then multiply it by 6 since there are six faces.
Let's say the length of one side of the cube is 5 cm. To find the area of one face, you would square the length of one side:
Area = side length x side length
Area = 5 cm x 5 cm
Area = 25 cm²
Since there are six faces on a cube, you would multiply the area of one face by 6 to find the total surface area:
Surface Area = 25 cm² x 6
Surface Area = 150 cm²
Therefore, the surface area of a cube with a side length of 5 cm is 150 cm².
Surface Area Apply Sample Work.
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