Surface area + reason - math problems

Number of problems found: 7

  • Painting
    To paint the pool with dimensions: 2 meters depth, 3m x 4m we bought paint to 50 meters square. How many "paint" will be a waste?
  • Octahedron - sum
    On each wall of a regular octahedron is written one of the numbers 1, 2, 3, 4, 5, 6, 7 and 8, wherein on different sides are different numbers. For each wall John make the sum of the numbers written of three adjacent walls. Thus got eight sums, which also
  • Spheres in sphere
    How many spheres with a radius of 15 cm can fit into the larger sphere with a radius of 150 cm?
  • Cuboid and ratio
    Cuboid has dimensions in ratio 1:2:6 and the surface area of the cuboid is 1000 dm2. Calculate the volume of the cuboid.
  • The body
    The body on the figure consists of cubes with an edge length 10 cm. What surface has this body?
  • Chocholate
    Table of chocolate is divided into squares on its surface. Lengthwise has 15 squares and widthwise 19 squares. We must chocolate broke into individual squares. How many times have we broke it to get only individual squares? It is not permitted to break se
  • Gutter
    How much metal is needed for production 60 pieces of gutter pipes with the diameter 17 cm and length of 6 m? The plate bends add 6% of the material.

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Examples for the calculation of the surface area of ​​the solid object . Reason - math problems.