A is true--------------------------
Explanation:
Find the Derivate -10/x
=10/x^2
Plug in -12 for x
10/(-12)^2
=5/72
113.04 divided by 3.14 is 36 so <u>36</u> <u>is the</u> <u>diameter and to find the radius you just divide 36 by 2 and that is 18.</u>
Circumference is 56.54866776 and Area is 254.4690049
