Dan has a square piece of paper. This paper is about 48cm wide. He then cuts it into 20 equal strips. How can he find out the breadth of each strip without measuring? Is this width accurate?

Each strip should be 48/20 or 2.4 cm

The trick would be to cut the paper into those 20 strips without measurement.
How could you possible do that?

Round it to the nearest tenth

To find the breadth of each strip without measuring, Dan can use the fact that the square piece of paper has a width of 48 cm. Since the paper is square, it means both the width and height are the same.

If Dan cuts the square paper into 20 equal strips, this means that he will have 20 identical rectangles. Since each strip is cut from the full width of the paper, by dividing the total width (48 cm) by the number of strips (20), he can find the breadth of each strip.

To calculate the breadth of each strip, Dan can use the following formula:

Breadth of each strip = Total width of the paper / Number of strips

In this case, Dan would calculate:

Breadth of each strip = 48 cm / 20 = 2.4 cm

So, the breadth of each strip is 2.4 cm.

Regarding the accuracy of the width, if Dan accurately cuts the paper into 20 equal strips and follows the calculations correctly, then the width of each strip should be accurate. However, it is important to note that human error in cutting and measuring can affect the accuracy of the final result.