Question

HELP ME PLEASE I AM TIMED, I NEED HELP FAST Here is the screen shot of the question

Answer 1

Answer:

Option C. r = ½√P/πI

Step-by-step explanation:

P = 4πIr²

From the question given above, we are to make r the subject of the formula. This can be achieved as shown below:

P = 4πIr²

Divide both side by 4πI

r² = P/4πI

Take the square root of both side

r = √P/4πI

The square of 4 is 2. Therefore the expression becomes:

r = ½√P/πI