Solve for the missing number: If √(?) / 200 = 0.02, then what is the value of ?

Introduction / Context:This is a direct equation with a square root. Isolate the root term first, then square both sides to remove the radical.

Given Data / Assumptions:√(?) / 200 = 0.02.

Concept / Approach:Multiply both sides by 200 to isolate √(?), then square.

Step-by-Step Solution:

Verification / Alternative check:Plug back: √16 / 200 = 4 / 200 = 0.02. Correct.

Why Other Options Are Wrong:0.4, 1.6, 4, 400 stem from stopping early or squaring/multiplying incorrectly.

Common Pitfalls:Squaring only one side or forgetting to isolate the square root before squaring.

Final Answer:16