The Largest Percentage Error You Can Allow in the Measurement $S = 4 \pi r ^ { 2 }$

Multiple Choice

The largest percentage error you can allow in the measurement of the radius of a sphere if you want the error in the calculation of its surface area using the formula $S = 4 \pi r ^ { 2 }$ to be no greater than 6 percent is about:

A) 2%
B) 6%
C) 3%
D) 1%