Length of rope from grazing area of a cow\nA cow grazes a circular region of area 2826 m². Find the required rope length (radius) in metres (use π ≈ 3.14).

Introduction / Context:
Converting a given circular area to radius is a standard application of A = πr^2, widely used in practical geometry and land measurement problems.

Given Data / Assumptions:

• Area A = 2826 m^2
• π ≈ 3.14

Concept / Approach:
Radius r = sqrt(A/π). The rope length equals this radius.

Step-by-Step Solution:

Verification / Alternative check:
Check area with r = 30: A = 3.14 * 900 = 2826 m^2, matching perfectly.

Why Other Options Are Wrong:
15 m, 24 m, and 36 m would yield areas not equal to 2826 m^2 with π = 3.14.

Common Pitfalls:
Using circumference formula instead of area or mishandling the square root step are frequent mistakes.

Final Answer:
30 m