A building that is100 ft tall casts a shadow that makes a 30 degree angle with the ground. Approximately how long in feet is the shadow across the ground

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%