The radius of a sphere is measured to be `(2.1+-0.5)` cm. Calculate its surface area with error limits .

Explanation

To solve the problem of calculating the surface area of a sphere given the radius and its error limits, we can follow these steps:

### Step 1: Understand the Formula for Surface Area
The surface area \( S \) of a sphere is given by the formula:
\[ S = 4 \pi R^2 \]
where \( R \) is the radius of the sphere.
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