Question 1118811
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The answer from the other tutor is giving you the length of the slanted sides of the bucket; I don't think that is what you wanted.<br>
The slope of the sides is simply the ratio between the vertical change (the depth of the bucket) and the horizontal change (the difference between the radii of the top and bottom):<br>
{{{slope = (36)/(45-12) = 36/33 = 12/11}}}<br>
And for the second bucket, where the smaller radius is 15 instead of 12,<br>
{{{slope = (36)/(45-15) = 36/30 = 6/5}}}