The width of a rectangular parallelepiped is 4cm, which is 8/13 of its length, and its height is 40%

| March 31, 2021 | education

The width of a rectangular parallelepiped is 4cm, which is 8/13 of its length, and its height is 40% of its length. calculate the volume of the parallelepiped.

Let us find the length of a rectangular parallelepiped, provided that its width, equal to 4 cm, is its 8/13 share.
In order to find out the value of a whole, if its part is known, it is necessary to multiply it by the denominator of the fraction and divide by the numerator.

4 * 13: 8 = 6.5 cm.

The height is 40% of the length. Let’s calculate it by making a proportion:
100% = 6.5 cm.

40% = x.

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

x = 40 * 6.5: 100 = 260: 100 = 2.6 cm.

The volume of such a figure corresponds to the formula:
V = a * b * c = 6.5 * 4 * 2.6 = 67.6 cm³.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.