Identical cubes are stacked in the corner of a room as shown below.
The number of cubes that are not visible are _________.
Solution:
We know that
A cube is a three-dimensional object that has 6 congruent square faces.
Dimensions of all the 6 square faces of the cube are the same.
A cube is sometimes also referred to as a regular hexahedron or as a square prism.
It is one of the 5 platonic solids.
1. A cube has 12 edges, 6 faces, and 8 vertices.
2. All the faces of a cube are shaped as a square hence the length, breadth, and height are the same.
3. The angles between any two faces or surfaces are 90°.
4. The opposite planes or faces in a cube are parallel to each other.
From the figure
20 cubes are not visible.
Therefore, the number of cubes that are not visible are 20.
✦ Try This: Order of rotational symmetry of acute triangle is ____.
☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 10
NCERT Exemplar Class 7 Maths Chapter 12 Problem 58
Identical cubes are stacked in the corner of a room as shown below. The number of cubes that are not visible are _________.
Summary:
Identical cubes are stacked in the corner of a room as shown. The number of cubes that are not visible are 20.
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