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Surface Areas and Volumes
RD Sharma
CBSE
Grade 10

Question:

The slant height of a conical tent is $19\text{ m}$ and the radius of its base is $14\text{ m}$. Find the area of the canvas required to make the tent.

Step-by-Step Solution

Key Concept: Canvas area $= \text{CSA of cone} = \pi r l = \dfrac{22}{7} \times 14 \times 19 = 44 \times 19 = 836\text{ m}^2$.
$\text{Area} = \pi r l = \dfrac{22}{7} \times 14 \times 19 = 44 \times 19$. [1.0 Mark]
$= 836\text{ m}^2$. [1.0 Mark]

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🎯 Official CBSE Marking Scheme:
Applying CSA formula $\pi r l$: 1.0 Mark
Evaluating canvas area $= 836\text{ m}^2$: 1.0 Mark

Correct Answer:
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