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The surface area of a cone is given by the formula:
S = πr(r + l)
where r is the radius and l is the slant height.
Given: r = 10 inches and l = 15 inches.
Using π ≈ 3.14, we can substitute the values into the formula:
S = 3.14*10(10 + 15)
S = 3.14*10(25)
S = 3.14*250
S ≈ 785 square inches
The surface area of the cone is approximately 785 square inches.
A. 785 square inches