Question

Calculate the length of strip of all the mm squares in one square metre; if placed one alongside the other

Answer 1

in one square meter there are = 1000 mm X 1000 mm  squares
        = 1, 000,000 mm squares.

The side length of each square is  1mm.

Now we place all these small squares one behind another. They are lined up along a straight line. So we have a big rectangle.  The dimesions will be

    width = 1mm        length = 1,000,000 * 1mm = 1,000 meters

Answer 2

Answer:

1 sq m = 1000 thousand sq mm = (1000×1000) sq m. One thousand millimeter squares placed one alongside the other will stretch out 1 meter; 1000 thousand squares will therefore be 1000 meters long