The dimensions of a rectangular parallelepiped are 12 cm, 8 cm and 5 cm. Find the area of its surface.
| July 7, 2021 | education
The surface area of a rectangular parallelepiped is found by the formula:
S = 2 * (a * b + b * c + a * c).
Substitute the data into the formula: a = 12, b = 8, c = 5.
S = 2 * (12 * 8 + 8 * 5 + 12 * 5)
S = 2 * (96 + 40 + 60).
S = 2 * 196.
S = 392 cm²
Answer: S = 392 cm².
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