For those that can't see the pic clearly, John has 315 pieces of square tiles, each of side 30cm long. i) find the minimum number of such tiles he should buy more of so that he can lay a large square with all the tiles

ii)Hence find the area of the large square

*btw the lvl for this is sec 1 and the topic is prime factors

This assignment is past the original due date o this data is from a sample. calculate the mean, standard deviation, and variance 16.7 11.1 46.7 14.8 13.3 16.6 18.5 47.3 42,8 show the following answers to 2 decimal places. sample mean- sample standard deviation ( use the standard deviation above for your calculation.) sample variance ooops- now you discover that the data was actually from a population! so now you must give the population standard deviation.