Podcast
Questions and Answers
What is the area of a square in terms of its side length?
What is the area of a square in terms of its side length?
- A=s^2
- A=4s
- A=s + s
- A=2s (correct)
What is the perimeter of a square if the side length is represented by s?
What is the perimeter of a square if the side length is represented by s?
P=4s
What is the area of a rectangle?
What is the area of a rectangle?
A=l x w
What is the perimeter of a rectangle?
What is the perimeter of a rectangle?
What is the area of a triangle?
What is the area of a triangle?
What is the perimeter of a triangle?
What is the perimeter of a triangle?
What is the formula for the area of a circle?
What is the formula for the area of a circle?
What is the formula for the circumference of a circle?
What is the formula for the circumference of a circle?
What is the Pythagorean Theorem?
What is the Pythagorean Theorem?
What is the result of negative multiplied by negative?
What is the result of negative multiplied by negative?
What is the result of negative multiplied by positive?
What is the result of negative multiplied by positive?
What is the formula for slope in coordinate geometry?
What is the formula for slope in coordinate geometry?
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Study Notes
Area and Perimeter Formulas
- Area of a square: A = 2s (s = side length)
- Perimeter of a square: P = 4s (s = side length)
- Area of a rectangle: A = l x w (l = length, w = width)
- Perimeter of a rectangle: P = 2l + 2w
Area and Perimeter of Triangles
- Area of a triangle: A = 1/2bh (b = base, h = height)
- Perimeter of a triangle: P = a + b + c (sum of all sides)
Circular Measurements
- Area of a circle: A = πr² (r = radius, π = Pi)
- Circumference of a circle: C = 2πr
The Pythagorean Theorem
- Fundamental relation in right triangles: a² + b² = c² (where c is the hypotenuse)
Slope Calculation
- Slope formula: m = (y₂ - y₁) / (x₂ - x₁) for two points (x₁, y₁) and (x₂, y₂)
Multiplication Rules
- Negative multiplied by negative equals positive.
- Negative multiplied by positive equals negative.
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