Rectangular tank water depth — convert cm2 to m2 properly: A rectangular tank holds 2.6 m3 of water. If the area of its base is 6500 cm2, find the depth of water in meters.

Introduction / Context:
Depth equals volume divided by base area, but unit consistency is essential: convert the base area from cm2 to m2 before dividing.

Given Data / Assumptions:

• Volume V = 2.6 m3
• Base area A = 6500 cm2 = 6500/10000 = 0.65 m2

Concept / Approach:
Depth h = V / A with consistent SI units.

Step-by-Step Solution:
h = 2.6 / 0.65 = 4 m

Verification / Alternative check:
Units: m3 / m2 = m, which is correct for depth.

Why Other Options Are Wrong:
3.5, 5, 8 arise from incorrect area conversion or arithmetic.

Common Pitfalls:
Using 6500 as m2 directly; forgetting that 1 m2 = 10000 cm2.

Final Answer:
4