Mathematics
Grade 10
15 min
Convert square and cubic units of length
Convert square and cubic units of length
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Introduction & Learning Objectives
Learning Objectives
Derive the conversion factors for square and cubic units from their linear equivalents.
Convert between different metric square units (e.g., cm² to m²).
Convert between different metric cubic units (e.g., mm³ to m³).
Convert between different imperial square and cubic units (e.g., ft² to yd², in³ to ft³).
Apply unit conversions to solve problems involving the surface area of 3D figures.
Apply unit conversions to solve problems involving the volume of 3D figures.
Analyze and solve multi-step word problems that require converting square or cubic units.
Ever wondered how many cubic centimeters of water are in a 1-liter bottle, or how many square feet of carpet you need for a room measured in square yards? 🤔
This tutorial will demystify the process of con...
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Key Concepts & Vocabulary
TermDefinitionExample
Linear UnitA standard measure of one-dimensional length or distance.1 meter (m), 1 foot (ft), 1 centimeter (cm).
Square UnitA unit of area, representing a square with sides of a specific linear unit. It is two-dimensional.1 square meter (m²) is the area of a 1m by 1m square.
Cubic UnitA unit of volume, representing a cube with edges of a specific linear unit. It is three-dimensional.1 cubic meter (m³) is the volume of a 1m by 1m by 1m cube.
Conversion FactorThe number used to multiply or divide a quantity to convert it from one unit to another.The linear conversion factor from meters to centimeters is 100, because 1 m = 100 cm.
AreaThe measure of a two-dimensional surface, expressed in square units.The area of a 2m by 3m rectangle is 6 m².
VolumeThe measure of the am...
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Core Formulas
Area Conversion Rule
If 1 \text{ linear unit A} = k \times (1 \text{ linear unit B}), then 1 \text{ unit A}^2 = k^2 \times (1 \text{ unit B}^2).
To find the conversion factor for area, you must SQUARE the linear conversion factor. Use this when converting units like cm² to m² or ft² to in².
Volume Conversion Rule
If 1 \text{ linear unit A} = k \times (1 \text{ linear unit B}), then 1 \text{ unit A}^3 = k^3 \times (1 \text{ unit B}^3).
To find the conversion factor for volume, you must CUBE the linear conversion factor. Use this when converting units like m³ to cm³ or yd³ to ft³.
Metric Capacity-Volume Link
1 \text{ cm}^3 = 1 \text{ mL} \quad \text{and} \quad 1000 \text{ cm}^3 = 1 \text{ L} \quad \text{and} \quad 1 \text{ m}^3 = 1000 \text{ L}
This rule directly links...
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Challenging
A hollow cylindrical pipe has an inner radius of 2 inches and a length of 5 yards. What is the volume of the space inside the pipe in cubic feet (ft³)? (Use π ≈ 3.14)
A.37.68 ft³
B.1.57 ft³
C.1.31 ft³
D.18.84 ft³
Challenging
A contractor is pouring a concrete patio that is 15 ft long, 12 ft wide, and 3 inches thick. Concrete is sold by the cubic yard (yd³). If concrete costs $120 per yd³, what is the total cost of the concrete required?
A.$180
B.$200
C.$540
D.$600
Challenging
In a fictional measurement system, 1 'zorp' = 4 'fleeps'. Based on this linear relationship, how many cubic zorps (zorp³) are equivalent to 1,280 cubic fleeps (fleep³)?
A.20 zorp³
B.80 zorp³
C.320 zorp³
D.0.05 zorp³
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