Final answer:
To find R in a triangle where the distance between r and R is 12 inches and r is 5 inches, simply add the two values together, resulting in R being equal to 17 inches.
Step-by-step explanation:
The question relates to finding the value of R in a triangle given the distance between r and R and the value of r. We are told that the distance between r and R is 12 inches and r is 5 inches. To find R, simply add the distance to the value of r.
R = r + distance
R = 5 inches + 12 inches
R = 17 inches
Thus, the value of R is 17 inches.