Troy made some blocks for his younger brother to play with. Eight of the blocks are cylinders, and he would like to glue a yellow ribbon around the top and bottom of each cylinder to decorate them. The radius of each block in 3 centimeters. How much ribbon does he need to complete his project?

The seasonal output of a new experimental strain of pepper plants was carefully weighed. the mean weight per plant is 15.0 pounds, and the standard deviation of the normally distributed weights is 1.75 pounds. of the 200 plants in the experiment, how many produced peppers weighing between 13 and 16 pounds