SOLUTION: The top of a rectangular cuboid has an area of 0.56 metres squared,the front is 0.12 metres squared and the end is 0.105 metres squared.How do i calculate the length.Thanks for you

Algebra ->  Surface-area -> SOLUTION: The top of a rectangular cuboid has an area of 0.56 metres squared,the front is 0.12 metres squared and the end is 0.105 metres squared.How do i calculate the length.Thanks for you      Log On


   



Question 763597: The top of a rectangular cuboid has an area of 0.56 metres squared,the front is 0.12 metres squared and the end is 0.105 metres squared.How do i calculate the length.Thanks for your help.
Answer by ramkikk66(644) About Me  (Show Source):
You can put this solution on YOUR website!
Let the Length, Width and Height be L, W and H metres
Top = L*W = 0.56 ------ eqn(1)
Front = L*H = 0.12 ------ eqn (2)
Side = W*H = 0.105 ------- eqn(3)
Multiplying the above 3 equations (we can do this because we know that none of the values are 0)
L%2AW%2AL%2AH%2AW%2AH+=+%28L%2AW%2AH%29%5E2+=+0.56%2A0.12%2A0.105+=+0.007056
Hence L%2AW%2AH+=+sqrt%280.007056%29+=+0.084
Now we can find L as L+=+%28L%2AW%2AH%29%2F%28W%2AH%29+=+0.084%2F0.105+=+0.8
Length = highlight%280.8%29 meters.
:)