3-mm-thick sheet of copper is cut in the shape of a square, with a side length of 5 cm. If there is an uncertainty of 1 in the angles, estimate the % uncertainty in the volume of the sheet due to this.

2.In an experiment to measure the density of copper, 4-mm-thick sheet is cut in the form of a square. If the balance can measure a maximum mass of 120 g, what is the maximum length of the side of the square that can be used? Assume that the density of copper is roughly 9 g/cm3.

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