SOLUTION: Solve for the indicated letter. Solve the formula. S= 1/3 nr^2h + 4nrh for r.

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Question 314267: Solve for the indicated letter. Solve the formula.
S= 1/3 nr^2h + 4nrh for r.

Answer by ankor@dixie-net.com(22740)   (Show Source): You can put this solution on YOUR website!
Solve for the indicated letter. Solve the formula.
S = for r.
:
= S
Multiply by 3
= 3S
:
= 3S
Factor out nh
nh(r^2 + 12r) = 3S
divide both sides by nh
r^2 + 12r =
Arrange as a quadratic equation
r^2 + 12r - = 0
Solve for r using the quadratic formula

In this equation: x = r a=1; b=12; c=-

:

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