A material is having Poisson's ratio 0.2. A load is applied on it due to which it suffers the longitudinal strain `3xx10^(-3)` , then find out the percentage change in its volume.

Explanation

To find the percentage change in volume of a material given its Poisson's ratio and longitudinal strain, we can follow these steps:

### Step 1: Understand the given values
- Poisson's ratio (ν) = 0.2
- Longitudinal strain (ε) = 3 × 10^(-3)

### Step 2: Relate longitudinal strain to lateral strain using Poisson's ratio
The relationship between longitudinal strain (ε) and lateral strain (δ) is given by:
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