What is, one- two thirds to the 3rd power

What is the greatest common factor of 6a, 8a^{2}, and 14?

Nnnnneeedd 1.find the residual if you know the actual number is 5.2 and the predicted value is 4.8

Miss henderson wants to build a fence around a rectangular garden in her backyard in the scale drawing the perimeter of the garden is 14 in of the actual length of a b is 20 ft how many feet of fencing what you need