LilSsc2766 LilSsc2766
  • 13-05-2020
  • Mathematics
contestada

If the volume of a cone is 96 and it has a radius of 6, then what is the surface area?

Leave in terms of pi

Respuesta :

Rau7star
Rau7star Rau7star
  • 18-05-2020

Answer:

75.102π

Step-by-step explanation:

Surface area is given by

SA= [tex]\pi rl+\pi r^2[/tex]

Volume 'V'=[tex]\pi r^2\frac{h}{3}[/tex]

lets determine 'h'

(96 x 3)/ π6² = h

h= 2.546 unit

Length 'l' = [tex]\sqrt{r^2+h^2}[/tex] => [tex]\sqrt{6^2+ 2.546^2}[/tex]

            l= 6.517 unit

substituting all the required values in surface area formula

SA= (π x 6 x 6.517) + (π x 6²)

SA= 39.102π + 36π

SA= 75.102π

Thus, the surface area is 75.102π

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