The two edges of a rectangular box are 8 and 5, and the volume of the box is 280. Find the surface area of this box
| September 24, 2021 | education
The volume of a parallelepiped is the product of the length of its three faces.
Let’s denote them as a, b and c. Suppose a = 8, b = 5.
In order to find the surface area (S), we need to know
value c. C = 280 / (8×5) = 7.
Then S = 2x (ab + bc + ac) = 2x (8×5 + 5×7 + 8×7) = 262.
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