If a circle has a diameter of 6 inches, what is it’s area?

Question and answers are in the attached picture. you so much in advance.

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?