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 $D_{o}$ and $D_{i}$ respectively, the area ratio is given by
(A) $\frac{D_{o}^{2}-D_{i}^{2}}{D_{i}^{2}}$
(B) $\frac{D_{i}^{2}-D_{o}^{2}}{D_{i}^{2}}$
(C) $\frac{D_{o}^{2}-D_{i}^{2}}{D_{o}^{2}}$
(D) $\frac{D_{i}^{2}-D_{o}^{2}}{D_{o}^{2}}$

Question ID - 1 | SaraNextGen Top Answer

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 $D_{o}$ and $D_{i}$ respectively, the area ratio is given by
(A) $\frac{D_{o}^{2}-D_{i}^{2}}{D_{i}^{2}}$
(B) $\frac{D_{i}^{2}-D_{o}^{2}}{D_{i}^{2}}$
(C) $\frac{D_{o}^{2}-D_{i}^{2}}{D_{o}^{2}}$
(D) $\frac{D_{i}^{2}-D_{o}^{2}}{D_{o}^{2}}$