9 is the best estimate whole number
Since sqrt(52) is an irrational number, the best estimate is âˆš52. Any decimal estimate can be improved by adding another digit so none can be BEST.
The best answer I came up with is this. We know that the Atlantic Ocean is 33,420,000 square miles. And there are 1,760 yards in a mile and that gives us 58,819,200,000 square yards.
It is best to do the conversion in lengths first. There are 1.0936133 yards in a metre. So a squate metre is 1.09361332 square yards. This is 1.19599004993689, so we need to multiply the number of square metres by this. 50 x 1.19599004993689 = 59.7995024968445 Therefore, 50m2 is equal to 59.8yds2
English units--square feet or square yards. Metric--square meters
The best estimate of the number of stars in a typical galaxy is unknown there is so many but the best estimate is BILLIONS
2.25 is a 'best guess'. 2.25 x 2.25 = 5.0625