Question 1126399
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If you want a formula that you can use to find the radiation intensity at any given distance from the machine, then you can find the constant of proportionality as shown by the other tutor.<br>
If you only need to answer the problem for this one new distance, you don't need to do that much work.<br>
Since the intensity varies inversely as the square of the distance from the machine, the intensity at 3.2 meters will be the intensity at 3 meters, multiplied by the square of the ratio of the two distances:<br>
{{{62.5*(3/3.2)^2}}} = 54.932, to 3 decimal places.