Imagine water flowing through a garden hose. If you make the hose 8 times longer, the water faces much more frictional resistance. If you simultaneously pinch the hose to make its cross-sectional area 4 times smaller, the flow restriction multiplies further, making it extremely difficult for water to pass through.

Remember 'Length is High, Area is Low, Resistance will Grow' — length goes to the numerator, area goes to the denominator.

According to Ohm's law and material properties, resistance is defined by the formula $R = \rho \frac{l}{A}$, where $\rho$ is the electrical resistivity of the material. When a wire is stretched or modified, its volume remains constant only if mass and density are constant, but here the problem explicitly states the length and cross-sectional area changes independently. Substituting the modified dimensions into the resistance formula reveals that the scaling factors multiply directly, yielding a 32-fold increase in resistance.

In competitive exams, always be careful whether a wire is 'stretched' (where volume $V = l \times A$ remains constant) or 'reshaped/replaced' with given independent dimensions. Here, length and area were changed independently.