SOLUTION: 1/5 r^2-2= 5/6

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Question 286393: 1/5 r^2-2= 5/6
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
1/5 r^2-2= 5/6
r^2/5=5/6+2
r^2/5=5/6+12/6
r^2/5=17/6
6r^2=5*17
6r^2=85
r^2=85/6
r=sqrt85/6
r=3.7639 ans.
Proof"
1/5*3.7639^2-2=5/6
1/5*14.1668-2=.8333
2.8333-2=.8333
.8333=.8333