SOLUTION: How do I find the LENGTH of a CUBOID with the width of 12mm, height of 6cm and the Total Surface Area of 468cm^2 thanks.

Algebra ->  Surface-area -> SOLUTION: How do I find the LENGTH of a CUBOID with the width of 12mm, height of 6cm and the Total Surface Area of 468cm^2 thanks.       Log On


   

Question 315631: How do I find the LENGTH of a CUBOID with the width of 12mm, height of 6cm and the Total Surface Area of 468cm^2
thanks.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
How do I find the LENGTH of a CUBOID with the width of 12mm, height of 6cm and the Total Surface Area of 468cm^2
:
2(L*W) + 2(L*H) + 2(W*H) = S.A.
:
2(12L) + 2(6L) + 2(12*6) = 468
:
24L + 12L + 2(72) = 468
:
36L + 144 = 468
:
36L = 468 - 144
:
36L = 324
L = 324%2F36
L = 9 mm is the length
:
You can check solution in the original Surface area equation