Instructions

Read the following information and answer the questions based on it.
I. The length, breadth and height of a rectangular piece of wood are 4 cm, 3 cm, and 5 cm respectively.
II. Opposite sides of 5 cm. x 4 cm. piece are coloured in red colour.
III. Opposite sides of 4 cm. x 3 cm. are coloured in blue
IV. Rest 5 cm. x 3 cm. are coloured in green in both sides
V. Now the piece is cut in such way that a cubes of 1 cm x 1 cm x 1 cm are made.

Question 31

How many cubes have all the three colours ?

Solution

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The cubes that have all three colours are the cubes that are at the edges of the big cuboid.

The number of such cubes is 8.

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