Math

• What is the perimeter of a semi-circle with a diameter of 8 cm?

  Perimeter = $8 +$$\pi \times 4$
• How do you calculate the perimeter of a semi-circle?

  Perimeter = diameter + (π × radius)
• What is the radius of a semi-circle with a diameter of 8 cm?

  Radius = 4 cm
• What is the formula for the area of a semi-circle?

  Area = $\frac{1}{2} \pi r^2$
• If the radius of a semi-circle is 4 cm, what is its area?

  Area = $\frac{1}{2} \pi (4)^2 =$$8\pi \text{ cm}^2$
• Why is the area of a semi-circle calculated as half of the area of a full circle?

  Because a semi-circle is half of a full circle
• What is the diameter of a semi-circle if the radius is 4 cm?

  Diameter = 8 cm
• What is the relationship between the radius and diameter of a semi-circle?

  Diameter is twice the radius
• How does the perimeter of a semi-circle change if the diameter increases?


  The perimeter increases as the diameter increases
• If the diameter of a semi-circle is doubled, how does that affect the perimeter?

  The perimeter also increases, as it depends on the diameter