Area is used in case of planar objects and surface area is used in case of 3D objects.
Those objects with surface area or perimeter < N, or surface area / perimeter < 1.5, were removed as noise objects.
The remaining objects were combined into one object, for which surface area Aik was calculated.
The same study showed also that when participants were asked to discriminate two differently shaped objects according to surface area, their performance did not differ from their performance during the volume task.
Every three dimensional object has a surface area; the volume is the amount of space taken up by the object.
Correctly solving this exam question requires students to couple their understanding of the scaling law that controls the relationship between an object's mass, surface area, and the cross-sectional area of its limbs.
Two objects with an identical surface area were used ("small": 5.0×5.0 cm, and "large": 8.3×3.0 cm).
Note that the volume of objects was used as a parameter in all conditions and also when the participants were asked to compare the objects in terms of surface area.
The Kahrimanovic et al. (2010 ) study showed that the haptic volume judgments were biased by the objects' shape because the judgments were based on the surface area of objects, instead of the volume itself.
Hence, during the volume judgment task, an object with a larger surface area was perceived as being larger in volume, as compared with a differently shaped object with the same physical volume but a smaller physical surface area.
