lustrum,
pl = lustra
http://www.thefreedictionary.com/lustrum
One decade is ten years. Thus, five decades would be 50 years.
Ten There are ten years in a decade.
Ten years in a decade
A decade is ten years. Half a decade is five years.Therefore. four decades are forty years, plus the five years, totalling forty-five years (45 years).
each ten years are refered to as one DECADE.
Ten years is a decade
There are ten years in one decade.
A decade is made up of ten years. It takes ten years to make one decade. A year is one tenth of a decade.
No. A decade is 10 years.
10 years is a decade.
A group or division of ten; esp., a period of ten years; a decennium; as, a decade of years or days; a decade of soldiers; the second decade of Livy.
Ten years is a decade