Maisie needs to convert this scale drawing from a scale factor of 1 box = 6 inches to a scale factor of 1 box = 12 inches. The length in the scale drawing shown is 10 boxes. What will be the length of the boxes in the new drawing?

To convert the scale drawing from a scale factor of 1 box = 6 inches to a scale factor of 1 box = 12 inches, we multiply the length in the scale drawing by the ratio of the new scale factor to the old scale factor.

The new scale factor is 12/6 = 2.

The length in the new drawing is 10 * 2 = <<10*2=20>>20 boxes.

Therefore, the length of the boxes in the new drawing will be 20 inches. Answer: \boxed{20}.

To convert the scale drawing from a scale factor of 1 box = 6 inches to a scale factor of 1 box = 12 inches, we need to double the length of each box in the new drawing.

Given that the length in the scale drawing shown is 10 boxes, we need to find the length of the boxes in the new drawing.

Step 1: Multiply the length in the original drawing by the scale factor:
10 boxes * 6 inches = 60 inches

Step 2: Double the result to get the length in the new drawing:
60 inches * 2 = 120 inches

Therefore, the length of the boxes in the new drawing will be 120 inches.

To convert the scale drawing from a scale factor of 1 box = 6 inches to a scale factor of 1 box = 12 inches, we need to double the length of each box in the new drawing.

In the given scale drawing, the length is 10 boxes. To find the length of the boxes in the new drawing, we need to multiply this by the scale factor.

Length in the new drawing = Length in the scale drawing * Scale factor
= 10 boxes * 12 inches per box
= 120 inches

Therefore, the length of the boxes in the new drawing will be 120 inches.