The error in the measurement of the radius of a sphere is 2%. What will be the error in the calculation of its surface area?

Explanation

To solve the problem of finding the error in the calculation of the surface area of a sphere when the error in the measurement of the radius is given, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Formula for Surface Area**:
The surface area \( A \) of a sphere is given by the formula:
\[
A = 4 \pi r^2
...