3 words for JU 1–2 letters

Filter answers for the "ju" by length:
Sort
Alphabet (A–Z)
Alphabet (Z–A)
Scrabble score

1 letter (2)

j u
Sort
Alphabet (A–Z)
Alphabet (Z–A)
Scrabble score

2 letters (1)

ju
Length times width e.g.
?
A
?
R
?
E
?
A
Hint 1 meaning
The superficial contents of any figure; the surface included within any given lines; superficial extent; as, the area of a square or a triangle.
Hint 2 anagram
ERAA
Hint 3 another clue
CERTAIN BRAIN SIZE
17 +2