Final answer:
To find the total length of the cords, you add both the feet and the inches separately and then convert excess inches to feet. Renee's combined extension cord and power cord length is 10 ft 2 in.
Step-by-step explanation:
The problem given is a simple addition of lengths measured in feet and inches. Renee attaches a 6ft 6in extension cord to her computer’s 3ft 8in power cord. To find the total length, we add the feet together and the inches together separately:
Feet: 6 ft + 3 ft = 9 ft
Inches: 6 in + 8 in = 14 in
Since 12 inches make up 1 foot, we can convert the 14 inches into feet and inches:
14 inches = 1 ft + 2 inches
Now, add the converted feet to the total feet:
9 ft + 1 ft = 10 ft
And we have 2 inches remaining. So the total length of the cords combined is 10 ft 2 in, which corresponds to option (a).