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Homework Help: Area of tiling

  1. Jan 6, 2016 #1
    1. The problem statement, all variables and given/known data
    A man tiles a wall with 50 square tiles. Each tile has sides of 20 cm. The wall is ten tiles high and 5 tiles long.

    2. Relevant equations

    No real equations to use here...

    3. The attempt at a solution

    What length is the wall?
    20 cm x 5 = 100 cm= 1 m

    What height is the wall?
    20 cm x 10 = 200 cm= 2 m

    What is the area of the wall?
    50 tiles x 400 cm2 = 20 000 cm2

    If he uses square tiles of 10 cm sides, how many tiles would he need?
    1 m length / 10 cm tiles = 10 tiles
    2 m height / 10 cm tiles = 20 tiles

    20 tiles x 10 tiles = 200 tiles used

    Am I correct please?
  2. jcsd
  3. Jan 6, 2016 #2


    User Avatar

    Staff: Mentor

    That looks correct. Some calculations can be arrived at by alternate routes, but what you did is ok.
  4. Jan 6, 2016 #3
    Thanks DrClaude!
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