Perimeter and Area

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Across
  1. 3. perimeter = 3 x side
  2. 4. Surface of a 2-D shape
  3. 5. Length of boundary
Down
  1. 1. Area = side x side
  2. 2. perimeter = 2(length + breadth)
  3. 6. Area = 1/2 x base x height