What is the measure of ZGVI/?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

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

The graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250