U. S customary units of volume is closest to 4 liters in volume

Acontractor needs 54 square feet of brick to construct a rectangular walkway. the length of the walkway is 15 feet more than the width. write an equation that could be used to determine the dimensions of the walkway. solve this equation to find the length and width, in feet, of the walkway.

Acircle has a circumference of 28.36 units what is the diameter of the circle

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me