The outer surface area of the box can be found by adding up the areas of all six faces.
Area of one face = length x width
Face 1: 9cm x 7cm = 63cm²
Face 2: 9cm x 6cm = 54cm²
Face 3: 7cm x 6cm = 42cm²
Total area of these three faces = 63cm² + 54cm² + 42cm² = 159cm²
Since there are two of each type of face (front/back, top/bottom, left/right), the total surface area is:
2(63cm²) + 2(54cm²) + 2(42cm²) = 2(159cm²) = 318cm²
The volume of the box can be found by multiplying length x width x height:
Volume = 9cm x 7cm x 6cm = 378cm³
An open box whose shape is a cubiod has dimension 9cm by 7cm by 6cm find the outer surface area of the box and it volume
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