Answer:
25.12inch^2
Step-by-step explanation:
Area= pi r^2 = 3.14 x 8 =25.12inch^2
4y+2x=14 ==> multiply this 1st equation by (-1) => -4y-2x=-14
Now add it up to the 2nd equation
-4y-2x=-14
2y+2x=10
-------------- And now add them up
-2y +0x=-4
==> -2y=-4==> 2y = 4 & y=2
Last step: plug y into any equation & you will find x=3
3.2E-9
A bit complicated, so PLEASE don't ask for an explanation
