What is the perimeter of this regular hexagon? Please help! Round to the nearest tenth. (No links, I just need help..) I will give brainliest if you get it right please n' thank you!

1. preform the indicated operation. then estimate to see whether the proposed result is reasonable. 811.1 - 8.039 803.071 803.061 803.161 831.061 2. the ordered pair (1, 2) lies in which quadrant? quadrant ii quadrant iv quadrant iii quadrant i 3. sean tries to drink 3 liters of water every day how my millimeters of water does he drink in a day? 0.3 ml 0.003 ml 3,000 ml 30 ml 4. find the least common multiple. (lcm). 10, 36 5 180 20 360

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

If a || b and e || f , what if the value of y ?