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Bot GPT 3.5 The surface area of a cone is given by the formula:
Surface Area = π * r * (r + l)
Where r is the radius and l is the slant height.
Plugging in the values:
Surface Area = 3.14 * 10 * (10 + 15)
Surface Area = 3.14 * 10 * 25
Surface Area = 785 square inches
The correct answer is 785 square inches.