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Questions and Answers
What is the formula for the surface area of a prism?
What is the formula for the surface area of a prism?
- π × r × (r + l)
- 4 × π × r^2
- 2 × lw
- 2 × (lw + lh + wh) (correct)
What is the formula for the surface area of a sphere?
What is the formula for the surface area of a sphere?
- 4 × π × r^2 (correct)
- 2 × π × r^2
- π × r × (r + l)
- 2 × (lw + lh + wh)
What is the formula for the surface area of a cone?
What is the formula for the surface area of a cone?
- 2 × (lw + lh + wh)
- 4 × π × r^2
- 2 × π × r^2
- π × r × (r + l) (correct)
What is the formula for the volume of a cylinder?
What is the formula for the volume of a cylinder?
What is the formula for the volume of a pyramid?
What is the formula for the volume of a pyramid?
What is the formula for the surface area of a pyramid?
What is the formula for the surface area of a pyramid?
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Study Notes
Surface Area of Prisms
- Formula: 2 × (lw + lh + wh) where l = length, w = width, and h = height
- Includes the area of the two bases and the lateral surface area
- Lateral surface area is the area of the sides of the prism
Surface Area of Spheres
- Formula: 4 × π × r^2 where r = radius
- The surface area of a sphere is equal to four times the area of the great circle
- A great circle is a circle that divides the sphere into two equal parts
Surface Area of Cones
- Formula: π × r × (r + l) where r = radius and l = slant height
- Includes the area of the circular base and the lateral surface area
- Lateral surface area is the area of the curved side of the cone
Volume of Cylinders
- Formula: π × r^2 × h where r = radius and h = height
- The volume of a cylinder is equal to the area of the circular base times the height
Volume of Pyramids
- Formula: (1/3) × Bh where B = base area and h = height
- The volume of a pyramid is equal to one-third the base area times the height
Surface Area of Pyramids
- Formula: B + (n × s × l) where B = base area, n = number of sides, s = slant height, and l = length of one side
- Includes the area of the base and the lateral surface area
- Lateral surface area is the area of the triangular sides of the pyramid
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