A rectangle
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3cm, 3cm and 3cm respectively
It is likely that the shape you have in mind is a cube, with each edge being 3 cm long.
Volume = (length) x (width) x (height)A cube has all 3 dimensions equal.Volume = (3cm) x (3cm) x (3cm) = 27 cm3
it is about 5cm long and 3cm wide
18cm is the area and perimeter. the width is 3cm.