Acre and square yards are the unit of _________.
A football field is 120yards by 53.333 yards. What is the area of the football field in acres if 1acre=43560ft? Use correct significant figures when answering this question.
An old manuscript reveals that a landowner in the time of king Arthur held 3.00 acres of plowed iand plus a live stock area of 25.0 perches by 4.00 perches. What was the total area in :
(a) The old unit of roods
(b) The more modern unit of square meters ?
Here 1 acre is a area of 40 perches by 4 perches, 1 rood is 40 perches by 1 perch and 1 perch is 16.5 feet.