Find the surface area of a rectangular parallelepiped if its dimensions are 3 cm 5 cm and 6 cm.
| September 2, 2021 | education
The surface area is equal to the sum of the areas of all faces. For a rectangular parallelepiped there are six such faces, and their areas are 3 * 5, 3 * 6 and 5 * 6 cm ^ 2, two faces of each type.
Hence: S = (3 * 5 + 3 * 6 + 5 * 6) * 2 = (15 + 18 + 30) * 2 = 63 * 2 = 126 cm ^ 2.
Answer: the surface area is 126 sq. cm.
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