Calculate the sum of the edges, the area and volume of a rectangular parallelepiped whose

Calculate the sum of the edges, the area and volume of a rectangular parallelepiped whose measurement is 14 cm, 70 mm, 3 dm.

First, let’s convert all measurements to centimeters:

70mm = 0.7cm

3dm = 30cm

Now let’s find the sum of the edges of this rectangular parallelepiped. It is known that a rectangular parallelepiped has 4 edges of each type. In this case, their total amount will be as follows:

14 * 4 + 0.7 * 4 + 30 * 4 = 56 + 2.8 + 120 = 178.8 (cm) – the sum of the lengths of all ribs.

A rectangular parallelepiped has 6 faces, with a total of 3 different faces, each of which coincides with the opposite one. To find the area of ​​the entire parallelepiped, find the sum of the areas of its three different faces and multiply it by two:

(14 * 0.7 + 14 * 30 + 0.7 * 30) * 2 = (9.8 + 420 + 21) * 2 = 450.8 * 2 = 901.6 (cm2) – area of ​​a rectangular parallelepiped

The volume of a parallelepiped is found as the product of its three edges:

14 * 0.7 * 30 = 294 (cm3) – the volume of a rectangular parallelepiped.

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