Error Analysis Clara is asked to find the surface area of a sphere which has radius r, of 21 in. She says the surface area is 263.76 inches squared What is the surface area of the sphere?
What is Clara's likely error? Use 3.14 for pie
The correct formula for the surface area of a sphere is A = 4πr^2.
Substituting the given radius r = 21 in into the formula, we have:
A = 4 * 3.14 * (21^2)
A = 4 * 3.14 * 441
A = 5548.96 inches squared
Therefore, the surface area of the sphere is 5548.96 inches squared.
Clara's likely error is that she incorrectly calculated the surface area by using 263.76 inches squared instead of the correct value of 5548.96 inches squared.