The two rectangular halls have the same area. The length of the first hall is 20 m

The two rectangular halls have the same area. The length of the first hall is 20 m, width is 12 m. The width of the second hall is 8 m. Find its length?

Let’s calculate how many square centimeters the unknown area of the first of the two halls, which has a rectangular shape, is equal to, knowing that it is, by definition, equal to the product of its length by its width:

20 * 12 = 240.

Let us determine how many meters the length of the second hall, which has a rectangular shape, corresponds to the number of meters, knowing by the condition of the problem that its width is 8 meters:

240: 8 = 30.

Answer: The width of the second hall, which has a rectangular shape, is 30 meters.