Question

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

942 square centimeters
942 square centimeters

1,884 square centimeters
1,884 square centimeters

1,648.5 square centimeters
1,648.5 square centimeters

Answer 1

Lateral surface area = π r l = π(15)(20) = 300π. Using π = 3.14 gives 300 × 3.14 = 942 cm².

Answer: 942 square centimeters.