Answer:
30ft2. (C.)
I did this question once.
Sorry for my Lack of explanation.-
Answer:

Step-by-step explanation:
To isolate r, we're going to need to do some algebraic manipulation.

Multiply both sides by r:

Divide both sides by a:

Hope this helps!
12/3 is rational
DescriptionIn mathematics, a rational number is a number that can be expressed as the quotient or fraction