Answer:Δ
Explanation:
Δ
Delta /ˈdɛltə/ (uppercase Δ, lowercase δ or ; Greek: δέλτα délta, [ˈðelta]) is the fourth letter of the Greek alphabet. In the system of Greek numerals it has a value of 4. It was derived from the Phoenician letter dalet , Letters that come from delta include Latin D and Cyrillic Д.
She can fit 3 squares along the 10 inch side and 6 squares along the 18 inch side. When you multiply 3 by 6 you get 18.
The answer is not 20 because you cannot fit 20 3x3 squares.
He was devasted or ruined that he couldn't marry Juliet.