1.

The degree of disturbance of the sample collected by the sampler is expressed by a term called the "area ratio". If the outer diameter and inner diameter of the sampler are Do and Di respectively, the area ratio is given by

A. \(\frac{{D_0^2 - D_i^2}}{{D_i^2}}\)
B. \(\frac{{D_i^2 - D_0^2}}{{D_i^2}}\)
C. \(\frac{{D_0^2 - D_i^2}}{{D_0^2}}\)
D. \(\frac{{D_i^2 - D_0^2}}{{D_0^2}}\)
Answer» B. \(\frac{{D_i^2 - D_0^2}}{{D_i^2}}\)


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