3 years ago

How much material is needed to make the Nón Lá Vietnamese leaf hat? Round to the nearest tenth.

Mathematics

1 answer:

Rufina [12.5K]3 years ago

8 0

9514 1404 393

Answer:

408.4 in²

Step-by-step explanation:

The lateral area of a cone is ...

LA = 1/2πds . . . . . . . where d is the diameter and s is the slant height

Using the given dimensions, the area of the hat is ...

LA = 1/2π(20 in)(13 in) = 130π in² ≈ 408.4 in²

The surface area is about 408.4 in².

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