A cone-shaped megaphone has a radius of 15 centimeters and a slant height of 20 centimeters. A megaphone has an open bottom. What is the lateral surface area of the megaphone, in square centimeters? Use 3.14 for pi.(1 point)
Responses
1,648.5 square centimeters
1,648.5 square centimeters
1,884 square centimeters
1,884 square centimeters
109.9 square centimeters
109.9 square centimeters
942 square centimeters
To find the lateral surface area of the megaphone, we need to find the area of the curved surface.
The curved surface area of a cone can be found using the formula:
CSA = πrℓ
where CSA is the curved surface area, r is the radius of the base, and â„“ is the slant height.
In this case, the radius is given as 15 centimeters and the slant height is given as 20 centimeters.
Plugging these values into the formula, we get:
CSA = 3.14 * 15 * 20
CSA = 942 square centimeters.
Therefore, the answer is 942 square centimeters.