Answer:
B
Step-by-step explanation:
The formula of the midpoint of HE:

We have H(0; 0) and E(2a; 2a). Substitute:
Answer: A. 289.5
Method: 48.25 x 6 = 289.5
Answer: Squares have all 4 sides equal. Just square root 180 in a calculator and you'll get √(180)= approximately 13.4.