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An introduction to the estimation techniques of rounding and order of magnitude rounding. Rounding is a simple method for reducing values to one significant figure, while order of magnitude estimates are easy to compare since they are all powers of ten. The document also includes an example calculation for estimating the size of a one metric ton rock using order of magnitude rounding and geometry.
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The rock has a density of 3 g/cm
3
so the volume is 10
6 g / (3 g/cm
= 3.3 x 10
5 cm
Estimate that the rock is asphere,
(^3) r
d^
r^ = 2 (
d^
= 85.7 cm
90 cm
base angle A angle B
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