The width of the rectangular parallelepiped is 3.6 cm, which is 9/25 of its length

| July 18, 2021 | education

The width of the rectangular parallelepiped is 3.6 cm, which is 9/25 of its length, and the height is 42% of the length, calculate the volume of the parallelelepiped.

First of all, we find the length of a rectangular parallelepiped, provided that its width, equal to 3.6 cm, is its 9/25 share.
Remember: In order to find a part of an integer value, you must divide it by the denominator of the fraction and multiply by its numerator.

3.6 * 25: 9 = 10 cm.

Let’s calculate the length by making a proportion, since it takes 42% of the length:
10 cm = 100%.

x = 42%.

Let’s write the equation, acting according to the “cross” rule and find the value of the variable:

x = 10 * 42: 100 = 420: 100 = 4.2 cm.

The volume of such a figure corresponds to:
V = a * b * c = 10 * 3.6 * 4.2 = 36 * 4.2 = 151.2 cm³.



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