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A truck is used to transport some wood panels - OCR - GCSE Maths - Question 6 - 2020 - Paper 6

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A truck is used to transport some wood panels. Each wood panel is a cuboid measuring 2.4 m by 1.2 m by 1.8 cm. The density of each wood panel is 750 kg/m³. The truck... show full transcript

Worked Solution & Example Answer:A truck is used to transport some wood panels - OCR - GCSE Maths - Question 6 - 2020 - Paper 6

Step 1

Calculate the volume of one wood panel

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Answer

To find the volume of the wood panel, we use the formula for the volume of a cuboid:

V=extlength×extwidth×extheightV = ext{length} \times ext{width} \times ext{height}

Given:

  • Length = 2.4 m = 240 cm
  • Width = 1.2 m = 120 cm
  • Height = 1.8 cm

Substituting the values: V=240extcm×120extcm×1.8extcm=51840extcm3V = 240 ext{ cm} \times 120 ext{ cm} \times 1.8 ext{ cm} = 51840 ext{ cm}^3

To convert this volume into cubic meters: V=51840extcm3×1extm31000000extcm3=0.05184extm3V = 51840 ext{ cm}^3 \times \frac{1 ext{ m}^3}{1000000 ext{ cm}^3} = 0.05184 ext{ m}^3

Step 2

Calculate the mass of one wood panel

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Answer

Using the formula for mass:

M=Density×VolumeM = \text{Density} \times \text{Volume}

Given the density is 750 kg/m³, we calculate: M=750extkg/m3×0.05184extm3=38.88extkgM = 750 ext{ kg/m}^3 \times 0.05184 ext{ m}^3 = 38.88 ext{ kg}

Step 3

Calculate the total mass the truck can carry

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Answer

The truck can carry 15 tonnes, which is equivalent to: 15exttonnes=15000extkg15 ext{ tonnes} = 15000 ext{ kg}

Step 4

Calculate the maximum number of wood panels

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Answer

To find the maximum number of wood panels the truck can carry, we use:

Number of panels=Total mass truck can carryMass of one wood panel\text{Number of panels} = \frac{\text{Total mass truck can carry}}{\text{Mass of one wood panel}}

Substituting the known values: Number of panels=15000extkg38.88extkg385.1\text{Number of panels} = \frac{15000 ext{ kg}}{38.88 ext{ kg}} \approx 385.1

Since we cannot carry a fraction of a panel, we take the whole number:

Maximum number of wood panels = 385.

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