What is the difference between Height and Length? Definition: Height is the measurement of something from base to top. Length is the measurement or extent of the longest side of an object. Vertical vs Horizontal: Height measures a vertical distance. Length measures a horizontal distance. One dimensional Objects:
Ages Of US Presidents. John F. Kennedy is the youngest-ever elected president, aged 43. However, Theodore Roosevelt is the youngest person to ever become president. He was 42 when he succeeded to the presidency, following the assassination of McKinley. Ronald Reagan is the oldest person ever to be elected president. He was 69.
Updated February 06, 2017. Republican Ronald Reagan became the oldest president elected when he took office as the 40th president of the United States. The actor turned politician served two consecutive terms as president, from 1981 to 1989. Dates: February 6, 1911 -- June 5, 2004.