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abruzzese [7]
3 years ago
15

Solve the formula V=pir^2h for r PLEAASSSEEE HELP

Mathematics
2 answers:
otez555 [7]3 years ago
7 0

Answer:

B

Step-by-step explanation:

So we have the formula:

V=\pi r^2h

And we want to solve it for r.

So, let's first divide both sides by π and h. This will cancel out the right side:

r^2=\frac{V}{\pi h}

Now, take the square root of both sides:

r=\sqrt{\frac{V}{\pi h}}

And we're done!

Our answer is B.

I hope this helps!

Tasya [4]3 years ago
6 0

Answer:

B. r=\sqrt{\frac{v}{\pi h}

Step-by-step explanation:

We are given the formula:

V=\pi r^2 h

and asked to solve for r<em>. </em>Therefore, we must isolate r on one side of the equation.

\pi and h are both being multiplied by r². The inverse of multiplication is division. Divide both sides of the equation by \pi h.

\frac{v}{\pi h} =\frac{\pi r^2 h}{\pi h}

\frac{v}{\pi h} =r^2

r is being squared. The inverse of a square is a square root. Take the square root of both sides of the equation.

\sqrt{\frac{v}{\pi h}}  =\sqrt{r^2}

\sqrt{\frac{v}{\pi h}}=r

r=\sqrt{\frac{v}{\pi h}

Therefore, the correct answer is B. r=\sqrt{\frac{v}{\pi h}

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