The volume of a rectangle of a parallelepiped is 1.35 m3, height 2.25 m and a length of 8 dm, find its width.

Let’s determine what the base area of our rectangular parallelepiped should be, when from the condition of the task we know that with a volume of 1.35 m3, its height is 2.25 meters:

1.35: 2.25 = 0.6.

Let us determine what the width of our rectangular parallelepiped should be in order to obtain the area of the base found above, when from the condition of the task we know that its length is 8 decimeters:

8 dm = 0.8 m;

0.6: 0.8 = 0.75.

Answer: Its width is 0.75 m or 7.5 dm.