- A16
- B20
- C24
- D36
Step-by-Step Solution
Outer square is 6 by 6 = 36 tiles; inner floor is 4 by 4 = 16 tiles. Border = 36 - 16 = 20 tiles.
Answer: B) 20
A border of square tiles is placed around a 4 by 4 floor. With the border, the outer square is 6 by 6 tiles.
How many tiles are in the border (the outer ring only)?
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