The perimeter of a parallelogram is 50 cm. the length of the parallelogram is 5 cm more than the width. find the length of the parallelogram. 

1foot = 12 inches; 1 yard = 3 feet

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.

Issof claims that the scale factor is 1/2. which statement about his claim is correct