How many square metres of canvas is required for a conical tent whose height is 3.5 m and the base is 12 m?

Explanation

To find out how many square meters of canvas is required for a conical tent with a height of 3.5 m and a base radius of 12 m, we will follow these steps:

### Step 1: Determine the radius and height
- The height (H) of the conical tent is given as 3.5 m.
- The radius (R) of the base is half of the diameter, which is given as 12 m. Therefore, R = 12 m.

### Step 2: Calculate the slant height (L)
- The formula for the slant height (L) of a cone is given by:
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