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Questions and Answers
What is the square of the number 7?
What is the square of the number 7?
- 21
- 49 (correct)
- 14
- 35
How is the area of a square calculated if the side length is 5m?
How is the area of a square calculated if the side length is 5m?
- 5m + 5m = 10m²
- 5m * 5m = 10m²
- 5m - 5m = 0m²
- 5m * 5m = 25m² (correct)
What is the square root of 36?
What is the square root of 36?
- 6 (correct)
- 12
- 9
- 18
If the side length of a square is 4m, what is the area expressed in square meters?
If the side length of a square is 4m, what is the area expressed in square meters?
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Which of the following represents the operation of finding a square root?
Which of the following represents the operation of finding a square root?
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Study Notes
Square Numbers
- A square number is the result of a number multiplied by itself.
- Example: 3 * 3 = 9, where 9 is a square number.
- Another notation for squares is using a superscript "2": 3² = 9.
- Square numbers are used to calculate the area of squares.
- The area of a square is calculated by multiplying the side length by itself: Area = side * side = a * a = a².
- If the side length of a square is 3 meters, the area is 3m * 3m = 9m².
Square Roots
- Finding the square root is the reverse operation of squaring a number.
- The square root of a number n is represented as √n.
- The square root of a number is the number that, when multiplied by itself, gives the original number.
- Example: √(8m²) = √((3m)²) = √(3m * 3m) = 3m.
- √(3)² = 3, √(9) = 3.
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