Question on: JAMB Mathematics - 2022
Make v the subject of the formula from r = \( \sqrt \frac{3v}{\pi h} \)
A
v = 3Â \(Ï€r^2\) h
B
v = \(\frac{Ï€rh}{3}\)
C
v = Â \(\frac{Ï€r^2h}{3}\)
D
v = 3Ï€rh
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Correct Option: C
Given r = \( \sqrt \frac{3v}{\pi h} \)
Square both sides:
r\(^2\) = \(\frac{3v}{Ï€h}\)
cross multiply
3v = r\(^2\) * πh
v = \(\frac{Ï€r^2h}{3}\)
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