20*30 = 600 sq cm.
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No. The square is all on one flat surface, like a piece of paper, but a cube has height off of the paper. When you set the cube down on the piece of paper, the place where it touches the paper is a square, but there's a lot more to it than that.
deli
Draw a square of any size on a piece of paper, and that is what a 2D square looks like.
9 inches
A tri square is aÊtool for measuring Êa piece of wood. It has measuring and markings that are used to measure wood. Pre-marked increments on the tool means making precision measurements.