Podcast
Questions and Answers
Which of the following formulas can be used to find the surface area of a rectangular prism?
Which of the following formulas can be used to find the surface area of a rectangular prism?
- B) SA = lw + lh + wh
- A) SA = 2lw + 2lh + 2wh (correct)
- C) SA = l^2 + w^2 + h^2
- D) SA = 4Ï€r^2
What is the formula to find the volume of a cylinder?
What is the formula to find the volume of a cylinder?
- B) V = lwh
- D) V = 4/3Ï€r^3
- A) V = πr^2h (correct)
- C) V = (1/3)Ï€r^2h
If a cone has a radius of 5 cm and a height of 12 cm, what is its surface area? (Use π = 3.14)
If a cone has a radius of 5 cm and a height of 12 cm, what is its surface area? (Use π = 3.14)
- B) 150 cm^2
- C) 188.4 cm^2 (correct)
- A) 282.6 cm^2
- D) 94.2 cm^2
Which of the following is the formula to find the surface area of a sphere?
Which of the following is the formula to find the surface area of a sphere?
The lateral surface area of a cone is given by which formula?
The lateral surface area of a cone is given by which formula?
A rectangular prism has a length of 10 cm, a width of 5 cm, and a height of 8 cm. What is its volume?
A rectangular prism has a length of 10 cm, a width of 5 cm, and a height of 8 cm. What is its volume?
Flashcards
Rectangular Prism Surface Area Formula
Rectangular Prism Surface Area Formula
Surface Area (SA) = 2(lw + lh + wh)
Cylinder Volume Formula
Cylinder Volume Formula
Volume (V) = πr²h
Sphere Surface Area
Sphere Surface Area
Surface Area = 4πr²
Cone Lateral Surface Area
Cone Lateral Surface Area
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Rectangular Prism Volume
Rectangular Prism Volume
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Cone Surface Area Calculation
Cone Surface Area Calculation
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Study Notes
Surface Area and Volume of 3D Shapes
- The surface area of a rectangular prism can be found using the formula: SA = 2lw + 2lh + 2wh, where l, w, and h are length, width, and height respectively.
Volume of a Cylinder
- The formula to find the volume of a cylinder is: V = πr²h, where r is the radius and h is the height.
Surface Area of a Cone
- The surface area of a cone with a radius of 5 cm and a height of 12 cm is: SA = πr(r + l), where l is the slant height, which can be found using the Pythagorean theorem: l = √(r² + h²).
- Using the given values, the surface area of the cone is: SA ≈ 3.14(5)(5 + √(5² + 12²)).
Surface Area of a Sphere
- The formula to find the surface area of a sphere is: SA = 4πr², where r is the radius.
Lateral Surface Area of a Cone
- The lateral surface area of a cone is given by the formula: LSA = πrl, where r is the radius and l is the slant height.
Volume of a Rectangular Prism
- The volume of a rectangular prism with a length of 10 cm, a width of 5 cm, and a height of 8 cm is: V = lwh = 10 × 5 × 8 = 400 cm³.
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