In a rectangular parallelepiped, the height is 5 cm, the volume is 105 cm 3.
| February 1, 2021 | education
In a rectangular parallelepiped, the height is 5 cm, the volume is 105 cm 3. Find the volume of a rectangular parallelepiped if, with the same area, the base is increased by 80%
1. The area of a rectangular parallelepiped is equal to the product of the area of the base by the height, then the area of the base will be equal to:
105: 5 = 21 cm2.
2. Let’s define the new height of the parallelepiped:
5 + 5 * 0.8 = 5 * 1.8 = 9.
3. Then the volume of the figure will be equal to:
21 * 9 = 189 cm3.
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