Circle o has a diameter ab. if a is at (-6, -2) and b is at (-3, 4) , find the length of the radius of the circle. 9.6 units 4.2 units 3.4 units 10.5 units

Pls super important solve the botton one

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Is the point (0, 8) on the x-axis or y-axis? how do you know?