a European farm has a land area of 0.425km^2. determine this area in acres . 1.000 acre =43,560ft ^2

2 answers

area=.425km^2 (1E3m/km)^2 *(39.37in/m)^2* (1ft/12in)^2 * 1acre/43560ft^2
This is a good example of how to make conversions, keeping track of the units. Remember that nothing changes when you multiply by 1. Just use the expression for 1 which gets you where you want to go. I don't recall how many feet/m, etc., but I do recall that 1in = 2.54cm

0.425 km^2 * (1000m/km)^2 * (100cm/m)^2 * (1in/2.54cm)^2 * (1 ft/12in)^2 * 1 acre/43560ft^2 = 105.020 acre