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 answer

The surface area of a cone can be calculated using the formula:

Surface area = πr(r + l)

where r is the radius and l is the slant height.

Given that the radius is 10 inches and the slant height is 15 inches, we can plug these values into the formula:

Surface area = 3.14 * 10(10 + 15)
Surface area = 3.14 * 10(25)
Surface area = 3.14 * 250
Surface area = 785 square inches

So, the surface area of the cone is 785 square inches.