A gift box is in the shape of a cube whose side is 0-5 m- A wrapper used to pack the entire box and its cost is z 20 per m 2 - Find the total cost of the wrapperA- - 25B- - 30C- 2 35D- 40

The correct option is B ₹30Side = l = 0.5 m. nbsp; Total surface area of a cube = 6 × (l)² = 6 × (0.5)² = 6 × 0.25 = 1.5 m² nbsp; Cost of wrapper for 1 m² ...

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Standard VII

Mathematics

Cost of Painting, Laminating

A gift box is...

Question

A gift box is in the shape of a cube whose side is 0.5 m. A wrapper used to pack the entire box and its cost is ₹20 per m². Find the total cost of the wrapper

₹25

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₹30

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₹35

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₹40

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Solution

The correct option is B ₹30
Side = l = 0.5 m.
Total surface area of a cube = 6 × (l)²
= 6 × (0.5)²
= 6 × 0.25
= 1.5 m²
Cost of wrapper for 1 m² is ₹20.
∴ Total cost of the wrapper = 1.5 × ₹20
= ₹30

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A gift box is in the shape of a cube whose side is 0.5 m. A wrapper used to pack the entire box and its cost is ₹20 per m². Find the total cost of the wrapper

The correct option is B ₹30Side = l = 0.5 m. Total surface area of a cube = 6 × (l)² = 6 × (0.5)² = 6 × 0.25 = 1.5 m² Cost of wrapper for 1 m² is ₹20. ∴ Total cost of the wrapper = 1.5 × ₹20 = ₹30

The correct option is B ₹30
Side = l = 0.5 m.
Total surface area of a cube = 6 × (l)²
= 6 × (0.5)²
= 6 × 0.25
= 1.5 m²
Cost of wrapper for 1 m² is ₹20.
∴ Total cost of the wrapper = 1.5 × ₹20
= ₹30