Question

Select the correct answer.

Circle O is represented by the equation (x + 7)2 + (x + 7)2 = 16. What is the length of the radius of circle O?
A. 3
B. 4
C. 7
D. 9
E. 16

Answer 1

4

Explanation:

because r2=16 so you have to find the square root of 16 to get r