Please help me this is hard

Question

The area of a circle can be modeled by A=πr^2

where is the area and r is the radius of the circle.  What would the radicand, √A/π

represent based on the original formula?

 

Answer 1

Please note the definition of radicand: :

"the quantity under a radical sign"

This may not have been intended to be a "trick" question, but the technically correct answer is:

The radicand of √( A/∩ ), is the radius of a circle, squared. That is, ( A/ ∩ ) = r²

Answer 2

Given A = pi * r * r

we can solve for r as:

r * r = A / pi

or

r = sqrt (A / pi)

So, the expression represents the radius of the circle.

Answer 3

A = πr²

A/π = r²

√(A/π) = r

It gives the radius of the circle.