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Given the formula V=Pir^2h

rearrange the formula to make r the subject of the formula

Solve the equation: 2x^2+3x-2=0

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1 Answer

Sasha,

Happy New Year!

These two problems can be solved quickly. Here you go!

1) V=Pir^2h

Multiply both sides by 1/(pi h), and then take square root,

r = sqrt[V/(pi h)] <==Answer

2) (2x-1)(x+2) = 0

x = 1/2, -2 <==Answer

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