A spyglass in the shape of a cone has a slant height of 18 centimeters and a radius of 6 centimetersWhat is the surface area of the spyglass ? Use 3.14 for pi
To find the surface area of the spyglass, we need to find the curved surface area of the cone.
The formula for the curved surface area of a cone is given by:
CSA = π * r * l
Where:
CSA = curved surface area
r = radius of the cone
l = slant height of the cone
Given that the radius (r) of the cone is 6 centimeters and the slant height (l) is 18 centimeters, substituting these values into the formula we get:
CSA = 3.14 * 6 * 18
CSA = 339.12 cm² (rounded to two decimal places)
Therefore, the surface area of the spyglass is approximately 339.12 square centimeters.