To find the surface area of the hat, we need to find the lateral surface area of the cone.
The formula for the lateral surface area of a cone is given by: LSA = π × r × l, where r is the radius and l is the slant height.
Given that the diameter of the hat is 38 cm, the radius is half of the diameter, which is 38/2 = 19 cm.
Plugging in the values, we get: LSA = 3.14 × 19 × 30
Calculating this, we get: LSA = 1794.6 cm^2
Therefore, the surface area of the nón lá hat is approximately 1794.6 cm^2.
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)
1 answer