25 cm
The only dimensions possible are those specified in the question.
With no units given for the dimensions of the piece of material, it is impossible to say how many yards down each edge of the rectangle.
Measure the length and breadth of one face of the rectangle. Measure the thickness of the rectangle hollow piece. Multiply the length, breadth and thickness and this will give you the volume of the rectangular hollow piece in terms of cubic units. That is, if you measured the length, breadth and height in centimeters, the volume will be in cubic centimeters. Example: If the length of the piece is 10 cm, the breadth of the piece is 6 cm, and the thickness of the piece is 5 cm, the volume of the rectangular hollow piece is given by: 10 cm X 6 cm X 5 cm = 300 cubic cm or cm3
A boulder is the largest piece of sediment.
280cm???
a rectangle (think of a piece of paper)
You cannot have a 2 piece tangram. A tangram, by definition, is 7 pieces.
It depends on the shape of the six pieces.
A real physical rectangle on a piece of paper . . . no. Mathematically . . . if one of the dimensions is a negative length, then the area is negative.
The server.
Flat piece of inscribed metal given as an honor or reward
No. The guest of honor is given the first piece of cake, then the oldest Marine is offered the second piece and the youngest Marine gets the third piece.