Karry199414 Karry199414
  • 16-05-2020
  • Mathematics
contestada

A cone has a volume of 81 cubic feet and a height of 6 feet. What is the
radius of the base?
​

A cone has a volume of 81 cubic feet and a height of 6 feet What is theradius of the base class=

Respuesta :

jazzminevides
jazzminevides jazzminevides
  • 20-05-2020

Answer:

B. r = 2

Step-by-step explanation:

First start by getting your formula: [tex]V=\frac{1}{3} \pi r 2h[/tex]

Next plug in what you know:

8[tex]\pi[/tex]= [tex]\frac{1}{3}[/tex][tex]\pi[/tex]r2(6)

Solve for "r":

8[tex]\pi[/tex]=[tex]\frac{1}{3} \pi[/tex]r(12) ---------> divide the pi out and multiply by 3 on both sides to lose the fraction

24=r(12) ---------> divide by 12

2=r

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