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Math Help - A room is 25 ft

  1. #1
    Senior Member
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    A room is 25 ft

    A room is 25 ft long , 20 ft wide and 15 ft tall . Express the volume of the room in cubic metres . [ 1m = 3.281ft]

    I sure my answer is wrong but I try

    Now we have 25 ft long , 20 ft wide and 15 we must change all this to cubic metres

    3.281ft = 1m

    25 X 3.281ft
    20 X 3.281ft
    15 X 3.281ft
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  2. #2
    Senior Member nikhil's Avatar
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    1m=3.281ft so
    1ft=1/3.281m
    hence volume will be
    15x20x25 x(1/3.281)^3 m^3
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  3. #3
    MHF Contributor Unknown008's Avatar
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    What you can do, is to work out first the volume in cubic feet.

    Volume = Length x Breadth x Height.

    Volume = 25 x 20 x 15 = 7500

    Now, you work with the conversion.
    1 m = 3.281 ft
    1 m^3 = (3.281)^3 ft^3 = 35.320 ft^3

    So, 7500 ft^3 = (7500 / 35.320) * 1 = 212 m^3 (3sf)
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  4. #4
    Senior Member Mukilab's Avatar
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    You're correct about changing the values but you said you think you're answer is wrong, why don't you try posting it?

    it should be along the lines of \frac{25}{3.281}*\frac{20}{3.281}*\frac{15}{3.281}
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