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
The lateral surface area of a cone can be found using the formula: Lateral surface area = πrℓ, where r is the radius and ℓ is the slant height.
Given:
Radius, r = 15 cm
Slant height, ℓ = 20 cm
π ≈ 3.14
Using the formula, the lateral surface area of the megaphone is:
Lateral surface area = 3.14 * 15 * 20 = 942 square centimeters. Answer: \boxed{942}.