Juxtaposing two identical squares to form a rectangle, the perimeter of the rectangle is 12 less than the sum of the perimeter of the two squares. What is the side-length of the original square?
A.
3
B.
6
C.
9
D.
12
Exam No：2018 First Round Grade 4 Year：2018 Question No：28
Answer:
B
Knowledge points:
G4 - Geometry - Perimeter (Rectangles & Squares)
Solution:
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