Translate the following sentence into a mathematical equation:

Question

"The area, A, of a circle is the product of the number pi and the square of the radius, r."

A=pi X r^2

Is this correct?

Answer 1

or A=pi r^2

Answer 2

Yes, they're correct.

I'd write it as A = pi * r^2

Answer 3

is the difference of Victor's age and 13.