A carpenter had a board that was 5.28 m long. She used her circular saw to cut 9 m off the board. How many centimeters long was the board after the cut?

To find out how long the board is after the cut, we will need to subtract the length that was cut off from the original length of the board.

Step 1: Subtract the length that was cut off from the original length of the board. Original length of the board = 5.28 m Length cut off = 9 m

Length of the board after the cut = Original length of the board - Length cut off Length of the board after the cut = 5.28 m - 9 m

Extra: In order to subtract lengths, we need to make sure that the units are the same. Since the original length of the board is given in meters and the length cut off is also given in meters, we can directly subtract them.

Now, let's perform the subtraction:

Length of the board after the cut = 5.28 m - 9 m Length of the board after the cut = -3.72 m

Extra: The result of the subtraction is -3.72 m. This means that after the cut, the length of the board is -3.72 meters. However, this does not make sense as a length cannot be negative. Therefore, we need to consider whether there was a mistake made in the calculations.

It is important to note that a negative value for the length of the board after the cut indicates that the length of the board is shorter than the length that was cut off. In this case, it is not possible for the board to be shorter than the length that was cut off. Hence, there must have been a mistake in the calculation.

Extra: To correct the mistake, let's reconsider the calculation of the length of the board after the cut.

The length of the board after the cut cannot be negative, so it must be equal to 0 or greater.

Therefore, the correct length of the board after the cut is 0 meters.

Extra: Now, since the question asks for the length of the board after the cut in centimeters, we need to convert the length from meters to centimeters.

1 meter = 100 centimeters

So,

Length of the board after the cut (in centimeters) = Length of the board after the cut (in meters) x 100

Length of the board after the cut (in centimeters) = 0 meters x 100 Length of the board after the cut (in centimeters) = 0 centimeters

Thus, the board is 0 centimeters long after the cut.