Answer:
x = 13
Step-by-step explanation:
Take the square root of both sides
10.25
The piano is 5.1 feet wide.
Answer:{(3, 6), (4, 5), (4, 6), (5, 4), (5, 5), (5, 6), (6, 3), (6, 4), (6, 5), (6, 6)}