Posted by Daniel H on July 6, 2016, 10:30 pm, in reply to "Re: We got this much rain last night"
Found an error. It says 1 - "Measure the diameter of the bucket
at the level of the rain." I used the size of the opening at the top of the glass! See, I don't know how to follow instructions so I fail. I wouldn't have this problem if the instructions weren't telling me what to do, it brings out my authority problem. Or if Bret would post the damn measurement The new answer is 1.44 inches of rain (more or less). Sure looks like more than that in the glass, I probably have yet another error 1 - Measure the diameter of the bucket at the level of the rain. Subtract out twice the thickness of the walls. - answer - 2.5 inches 2 - Measure the diameter of the bucket at the bottom in the same way. answer - 1.5 inches 3 - Calculate the average of the two diameters. - 2.5 + 1.5 = 4 divide by 2 = answer - 2 inches 4 - Divide by two to find the average radius. - answer - 1 inch 5 - Find the average volume of rain = Depth x radius x radius x 3.14. Answer - 3.25 x 1 x 1 x 3.14 = 10.20 6 - Find the area at the top of the bucket (this is the area over which the rain is collected). a - Measure the diameter - 3 inches b - Divide the diameter by 2 to get the radius - answer - 1.5 c - Area = radius x radius x 3.14 - answer - 1.5 x 1.5 x 3.14 = 7.065 7 - Divide the rainfall volume by this area to get the rainfall. answer - 10.20 divided by 7.06 = 1.44 inches of rain (more or less). |
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