Before public lands could be sold under the Land Ordinance of 1785, the land had to be

Before public lands could be sold under the Land Ordinance of 1785, the land had to be free of American Indians

Explanation:)

The height is 24, and the ratio is 7:8

Step-by-step explanation:

If length is 28 and in the ratio it is simplified to 7 it means you divided by 4, so you multiply 6 by 4 to find the height, 24. Then you make the ratio of Width to Height, width is 21 and height is 24, 21:24. Then simplify, they can both be divided by 3, 21/3=7 24/3=8 so the ratio is 7:8