Pls help this is due tonight and I need help

The sum of the lengths of all the edges of a cube is 6 centimeters. what is the volume in cubic centimeters of the cube

Which of the following attitudes is not likely to lead to unsafe decisions? a. anxiety b. composure c. overconfidence

It's 90 °f in the shop with high humidity. what pressure will be shown on the high-side pressure gauge (ac system on)?             a.  10 to 50 psi    b.  40 to 140 psi  c.  210 to 290 psi  d.  at least 350 psi