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A reactangular sheet of dimension 33cmxx...

A reactangular sheet of dimension `33cmxx18cm` is rolled along its breadth to form a cylinder. Find the radius of the cylinder.

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To find the radius of the cylinder formed by rolling a rectangular sheet of dimensions 33 cm x 18 cm along its breadth, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Dimensions**: The dimensions of the rectangular sheet are given as: - Length (L) = 33 cm - Breadth (B) = 18 cm 2. **Identify the Rolling Direction**: The sheet is rolled along its breadth (18 cm). When the sheet is rolled, the breadth becomes the circumference of the base of the cylinder formed. 3. **Use the Formula for Circumference**: The circumference (C) of a cylinder is given by the formula: \[ C = 2\pi r \] where \( r \) is the radius of the cylinder. 4. **Set the Circumference Equal to the Breadth**: Since the breadth of the sheet becomes the circumference of the cylinder: \[ 2\pi r = 18 \text{ cm} \] 5. **Solve for the Radius (r)**: Rearranging the equation to find \( r \): \[ r = \frac{18}{2\pi} \] Simplifying this gives: \[ r = \frac{18}{2 \times 3.14} = \frac{18}{6.28} \approx 2.86 \text{ cm} \] 6. **Final Answer**: Therefore, the radius of the cylinder is approximately: \[ r \approx 2.86 \text{ cm} \]
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Knowledge Check

  • A rectangular sheet of paper 44 cm x 18 cm is rolled along its length and a cylinder is formed. The volume of the cylinder so formed is equal to (Take pi = 22/7)

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  • A rectangular sheet of paper 40 cm xx 22 cm , is rolled to form a hollow cylinder of height 40 cm . The radius of the cylinder (in cm ) is

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    3.5
    B
    7
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