What are all the powers of 4 in the range 4 through 1,000

The appalachian trail is a hiking trail that passes through the appalachian mountains. three members of a teen hiking group hiked a section of the trail. the hikers stopped at a rest area and equally shared 3 4 gallon of water. how much water did each person get?

Could somebody me with this radical simplification?

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square