Two cones with same base radius 8 cm and height 15 cm are joined together along their bases. Find the surface area of the shape so formed.

Explanation

To find the surface area of the shape formed by joining two cones along their bases, we will follow these steps:

### Step 1: Identify the given values
- Base radius (r) = 8 cm
- Height (h) = 15 cm

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