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 Mensuration 40 Flashcards |
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Mensuration primarily deals with measuring the ___ and ___ of geometrical shapes. |
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Length, area |
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True or False: The perimeter of a rectangle is calculated by the formula P = 2(length + breadth). |
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False. The correct formula is P = 2(l + b). |
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What is the perimeter of a square with side length 5 units? |
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20 units, calculated as P = 4 x 5. |
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Fill in the blank: The perimeter of an equilateral triangle with side length 'a' is given by ___ . |
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3 x a |
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Riddle: I am a shape that has four equal sides, and my perimeter is calculated by multiplying my side by four. What am I? |
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A square.  |
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How is the perimeter of a closed figure defined? |
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The perimeter is the total distance around a closed figure, calculated as the sum of the lengths of its sides. |
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What is the formula for calculating the perimeter of a rectangle? |
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P = 2(l + b), where l is the length and b is the breadth. |
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True or False: The perimeter of a regular closed figure is equal to the sum of its sides. |
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True. |
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If a rectangular garden has a length of 10 meters and a breadth of 4 meters, what is its perimeter? |
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28 meters, calculated as P = 2(10 + 4). |
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What mathematical operation is primarily used to find the perimeter of polygons? |
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Addition, as it involves summing the lengths of all sides. |
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What is the formula for calculating the area of a rectangle? |
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Area = length (l) × breadth (b) |
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The area of a square can be obtained by multiplying ___ by ___. |
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Side by side |
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If a rectangle has a length of 8 units and a breadth of 5 units, what is its area? |
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The area is 40 square units (8 × 5 = 40). |
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How do you calculate the area of a shape using graph paper? |
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Count the fully-filled squares as one square unit, half-filled squares as ½ square unit, and squares more than half-filled as one square unit, ignoring those filled less than half. |
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Fill in the blank: The area of a triangle is given by the formula ___ = (1/2) × base × height. |
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Area  |
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True or False: The area of a triangle can be calculated without knowing the base or height. |
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False. The area of a triangle requires both the base and height.  |
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Find the area of a square with a side length of 6 units. |
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The area of the square is 6² = 36 square units. |
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What is the area of a triangle with a base of 10 units and a height of 4 units? |
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The area of the triangle is (1/2) × 10 × 4 = 20 square units. |
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Fill in the blank: In the formula for the area of a triangle, the base and height must be ___ to each other. |
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Perpendicular |
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Multiple Choice: What is the area of a square with side length 'a'? |
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A²  |
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Completed! Keep practicing to master all of them. |
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