What is the surface area, in square inches, of a cone with a radius of 10 inches and a slant height of 15 inches? Use 3.14 for pi. (1 point)
1,177.5 square inches
2,198 square inches
785 square inches
471 square inches
The surface area of a cone can be found using the formula SA = πr^2 + πrl, where r is the radius and l is the slant height.
Plugging in the given values:
SA = 3.14 * (10^2) + 3.14 * 10 * 15
SA = 3.14 * 100 + 3.14 * 10 * 15
SA = 314 + 471
SA = 785 square inches
Therefore, the surface area of the cone is 785 square inches. The answer is 785 square inches, which is option C.