The answer is going to be exponents, I think. Not to sure though.
Hope this help! :)
Answer:
x = 4
PLS LOOK AT THE PIC I HAVE SENT YOU, HOPE THIS WILL HELP YOU!
Answer:

Step-by-step explanation:
The area of a circle varies directly as the square of its radius.

If r₁ = 2in, A₁ = 12.568 in₂, r₂ = 6.4 in, A₂ = ?
ATQ,

So, the new area of the circle is
.