Asked by Anonymous

Three cubes each of volume 125 cm are joined end to end to form a cuboid. find the total surface area of cuboid.
Answered by Anonymous
v=s^3 = 125
so s = 5

L = 3 s
area of sides = 4 (3 s * s) = 12 s^2
area of ends = 2 s^2
total = 14 s^2 = 14 * 25
Answered by Reiny
Wouldn't you be just hiding 4 faces ?
Visualize it, or sketch the 3 dice joined.
Answered by Anonymous
LOL - good point