# Site about baby

Baby

## Especially

Now it is easy to them to learn to calculate solid volume.

Especially it is useful after exercises with a cube of numbers by means of beads to learn that work of the area of the basis on height equally to prism volume.

The material consists of three solids prisms, pyramids its basis and height are equal to the basis and prism height and prisms, whose basis is equal to the pyramid basis, and the height is three times less.

Figures hollow.

Prisms are closed by a cover and are, in essence, boxes.

The pyramid has no cover from below, with its help it is possible to gather and shift different substances.

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