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A house-shaped card is made of a square with an equilateral triangle on top, as shown. What is the perimeter of the card's outline? (The dashed line is inside the card.)

Class 6Perimeter of ShapesMensuration
  • A40 cm
  • B48 cm
  • C32 cm
  • D56 cm

Step-by-Step Solution

Every side equals 8 cm. The outline has 3 sides of the square and 2 sides of the triangle: cm.
Answer: A) 40 cm

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