Find the surface area of a cone with a diameter of 16 inches and a slant height of 9 inches. Use 3.14 for pi.
Responses
427.04 square inches
1,256 square inches
226.08 square inches
480.42 square inches
The surface area of a cone is given by the formula:
Surface Area = πr(r + l)
where r is the radius and l is the slant height.
Given that the diameter of the cone is 16 inches, the radius is half of that, which is 8 inches.
Plugging in the values, we can calculate the surface area as:
Surface Area = 3.14 * 8(8 + 9)
= 3.14 * 8 * 17
= 427.04 square inches
Therefore, the surface area of the cone is 427.04 square inches.
Therefore, the correct answer is 427.04 square inches.