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
109.9 square centimeters
109.9 square centimeters
1,648.5 square centimeters
1,648.5 square centimeters
1,884 square centimeters
1,884 square centimeters
942 square centimeters
The lateral surface area of a cone can be calculated using the formula: Lateral Surface Area = πrℓ, where r is the radius and ℓ is the slant height.
Given that the radius (r) is 15 centimeters and the slant height (â„“) is 20 centimeters, we substitute these values into the formula:
Lateral Surface Area = 3.14 * 15 * 20
Lateral Surface Area = 942 square centimeters
Therefore, the correct answer is 942 square centimeters.