The total amount Allen will need to pay for the video game is $48.96 as 49-0.1+0.06=48.96
The answer is 1.12% decrease
Explanation in image
The formule is about area of a circle.

We need to solve the equation for x. Where x is the radius of the circle.
In order to solve it for x, we need isolate it for x on left side.
So, first we need to get rid pi from left side.
On dividing both sides by pi, we get


Taking square root on both sides, we get

