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wincy

Having a square bedroom with 5 mtrs as the length of the diagonal, compute for the number of 300mmx 300mm floor tile.. can you answer this question? :) thnx!!~

  • one year ago
  • one year ago

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  1. philo1234
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    If the room is square the diagonal will cut it into 2 right triangles. Each triangle has 2 45 degree angle and a 90 degree angle. Therefore, the diagonal is the hypotenuse of the triangle.

    • one year ago
  2. philo1234
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    Do you understand so far?

    • one year ago
  3. philo1234
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    With a right triangle you can find the sides of the triangle using trigonometric identities. Let us use sine. \[Sin \theta=\frac{ opposite }{ hypotenuse }\]

    • one year ago
  4. philo1234
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    |dw:1353043235853:dw| Sine 45 = x/5 \[x=5\frac{\sqrt{2} }{ 2 }\] Convert the tiles sizes from mm to meter makes it 0.03mmx0.03mm It would take x/0.03 =117.85 300mm x 300mm tiles to cover the width of the room and also the length. round 117.85 to 118 tiles To find the number of tiles 118*118 = 13924 tiles

    • one year ago
  5. philo1234
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    Any questions?

    • one year ago
  6. philo1234
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    I made a mistake replace 0.03m with 0.3 instead.

    • one year ago
  7. philo1234
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    300mm = 0.3m

    • one year ago
  8. philo1234
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    you should get 11.79, round up to 12 tiles to cover the width of the room. the length is also 12: therefore it would take 12*12 = 144 tiles

    • one year ago
  9. philo1234
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    Sorry about the computation error. Apart from that do you see how i got the answer?

    • one year ago
  10. gvt016
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    Yes, It is a reasonable answer...

    • one year ago
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