What does r= in this equation?: 50.24 = 2 x 3.14 x r squared?

Question

 What does r=?

Answer 1

The right side of the equation appears to be 2(pi)r²  and that would be the area of two circles.

So I believe it's likely that there's a mistake!

 

But if you wish to have the equation taken at face value, then first divide both sides of the equation by 6.28; this will isolate r squared, and all you would have to do would be to take the square root of that quotient (50.24/6.28).

Also, it's not accurate to use the value 3.14 for pi.

Answer 2

50.24 = 2(3.14)r²

 

50.24/[2(3.14)] = r²

 

r = √{50.24/[2(3.14)]} = ?

 

Just enter the numbers in your calculator.