Question

Solve for r: B=dPIEr^2

Answer 1

Answer:

C

Step-by-step explanation:

So we have the equation:

$B=d\pi r^2$

And we want to solve for r.

So first, isolate the r variable. Divide both sides by dπ. So:

$\frac{B}{d\pi}=\frac{d\pi r^2}{d\pi}$

The right side cancels:

$\frac{B}{d\pi}=r^2$

Take the square root of both sides:

$r=\sqrt\frac{B}{d\pi}$

We can rearrange the terms:

$r=\sqrt\frac{B}{\pi d}$

Our answer is C.