Question

A nón lá is a traditional Vietnamese hat in the shape of a perfect cone. What is the surface area of a hat with a diameter of 38 cm and a slant height of 30 cm? Use 3.14 for pi.(1 point)
Responses

3,579.6 square centimeters
3,579.6 square centimeters

1,789.8 square centimeters
1,789.8 square centimeters

2,923.34 square centimeters
2,923.34 square centimeters

8,113.76 square centimeters

Answer 1

Lateral surface area = πrl. Here r = 38/2 = 19 cm, l = 30 cm.

Area = 3.14 × 19 × 30 = 1,789.8 square centimeters.