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Flashcards: Perimeter and Area 50 Flashcards 
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What is the definition of perimeter in relation to a closed plane figure? |
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Perimeter is the total distance around the boundary of a closed plane figure, calculated by adding the lengths of all its sides.  |
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The formula for calculating the perimeter of a rectangle is ___ and ___. |
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Perimeter = 2 × (length + width).  |
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True or False: The perimeter of a polygon can only be calculated if the lengths of all sides are known. |
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True.  |
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If a rectangular garden has a length of 12 cm and a width of 8 cm, what is the perimeter? |
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The perimeter is 40 cm, calculated by 2 × (12 cm + 8 cm) = 2 × 20 cm = 40 cm.  |
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Fill in the blank: To determine the perimeter of any polygon, you must ___ the lengths of all its sides. |
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Add  |
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I am a shape that has four sides of equal length, and my perimeter is calculated as four times the length of one side. What am I? |
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A square.  |
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What practical applications can perimeter and area calculations have in everyday life? |
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They can be used for tasks such as determining the amount of fencing needed for a garden or the amount of paint required to cover a wall.  |
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The perimeter of a square is calculated by the formula ___ where s is the length of a side. |
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Perimeter = 4 × s  |
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True or False: The perimeter of a triangle is found by multiplying the lengths of its sides. |
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False. The perimeter of a triangle is the sum of the lengths of its three sides.  |
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What is the perimeter of a triangle with sides measuring 4 cm, 5 cm, and 7 cm? |
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The perimeter is 4 cm + 5 cm + 7 cm = 16 cm.  |
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Fill in the blank: Debojeet needs ___ meters of tape to go around his square photo frame with each side measuring 1 meter. |
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4  |
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Card: 23 / 50
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Riddle: I am a shape with four equal sides, and my perimeter is four times my side length. What am I? |
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A square.  |
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What are the two types of lines used to measure the perimeter of shapes created with letters? |
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Straight lines and diagonal lines.  |
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Calculate the perimeter of a square if each side measures 2 meters. |
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Perimeter = 4 × 2 m = 8 m.  |
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What is the formula to calculate the perimeter of a rectangle? |
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Perimeter = 2 × (Length + Width)  |
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Fill in the blank: The total perimeter of the 'F' shape is ___ units. |
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19  |
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True or False: The perimeter of the small path, which is 30 meters long and 20 meters wide, is 100 meters. |
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True  |
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If you run around the big path three times, how far do you run? |
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480 meters  |
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Riddle: I am the distance around a shape, measured in units, and I help you understand how far you must travel to go all the way around. What am I? |
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Card: 38 / 50
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Perimeter  |
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What are the straight and diagonal line counts for the 'F' shape? |
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16 straight lines and 3 diagonal lines  |
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Fill in the blank: To calculate the perimeter of a rectangle, you need to know the ___ and ___. |
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Length and Width  |
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Multiple Choice: What is the perimeter of the big path that is 50 meters long and 30 meters wide? A) 160 m B) 100 m C) 80 m D) 200 m |
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A) 160 m  |
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How do you determine the total perimeter of a shape with straight and diagonal lines? |
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Count the straight units (s) and diagonal units (d), then add them together to get total perimeter as 's d units'.  |
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True or False: If your friend runs 4 rounds on the small path, they would run a longer distance than you running 3 rounds on the big path. |
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False; you run 480 meters while your friend runs 400 meters. |
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What is the perimeter of a square with a side length of 40 meters? |
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Card: 50 / 50
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The perimeter of a square is calculated as 4 × side length. Therefore, for a square with a side length of 40 meters, the perimeter is 4 × 40 m = 160 meters.  |
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 Completed! Keep practicing to master all of them. |
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