Please help with attachment below

Find x to the nearest hundredth place

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

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%