Answer:
D
Step-by-step explanation:
Square root of 121 is 11.
11-7=4
A side of the original square is 4 feet.
Answer:
390 inches long
Step-by-step explanation:
The string = x


x = 390 inches
Answer: 7 3/4
Step-by-step explanation:
3 1/4 + 4 2/4 = 7 3/4