Aregular hexagon with a perimeter of 54 in find the measure of each side of the polygon described

Pls brainliest will be awarded if answer is correct

Hurrya vegetable garden and a surrounding path are shaped like a square that together are 11ft wide. the path is 2ft wide if one bag of gravel covers 9 square feet how many bags are needed to cover the path

Plz ( true - false) all triangles have interior angles whose measure sum to 90.