In triangle IJK, the measure of angle K=90 degrees, the measure of angle J=62 degrees, and KI=2.7 feet. Find the length of IJ to the nearest tenth of a foot.

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.