Pyramid + reason - math problems

Number of problems found: 5

  • Tower
    Charles built a tower of cubes with an edge 2 cm long. In the lowest layer there were 6 cubes (in one row) in six rows, in each subsequent layer always 1 cube and one row less. What volume in cm3 did the whole tower have?
  • Bricks pyramid
    How many 50cm x 32cm x 30cm brick needed to built a 272m x 272m x 278m pyramid?
  • Pyramid Z8–I–6
    Each brick of the pyramid contains one number. Whenever possible, the number in each brick is the lowest common multiple of two numbers of bricks lying directly above it. May that number be in the lowest brick? Determine all possibilities.
  • Billiard balls
    A layer of ivory billiard balls of radius 6.35 cm is in the form of a square. The balls are arranged so that each ball is tangent to every one adjacent to it. In the spaces between sets of 4 adjacent balls other balls rest, equal in size to the original.
  • Hexagon rotation
    A regular hexagon of side 6 cm is rotated through 60° along a line passing through its longest diagonal. What is the volume of the figure thus generated?

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Pyramid Problems. Reason - math problems.