You have to take the triangle inequality into account: no side can be longer than the two other sides together. That makes the minimum size for the third side 3 cm., and the maximum, 7 cm. To be more accurate, 3 cm < length < 7 cm.
Chat with our AI personalities
I am not sure what the point is for you to give us the dimensions of a rectangle and then ask what one of those dimensions is. Perhaps you are not sure whether the shorter or the longer of the two dimensions would be considered the length, and which the width. I would say that a rectangle measuring 2cm x 5cm is 2cm wide and 5cm long.
No because to form a triangle the sum of its smallest sides must be greater than its longest side.
A rectangular prism that measures 8.2cm 5cm and 2cm has a volume of 82cm3
20
The volume is 3cm * 2cm * 5cm = 30 cm3. The density will depend on the mass of the prism which will depend on the material that the prism is made from.