- A12 cm
- B16 cm
- C18 cm
- D21 cm
Step-by-Step Solution
Walk around the boundary: cm. (The steps add up to the full width 6 and height 3, so )
Answer: C) 18 cm
Count the unit lengths around the yellow staircase shape on the grid. Each small square is 1 cm by 1 cm. What is its perimeter?
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