The area of a circle is

The radius is half the diameter, so we have

Answer:
I think it's the fourth option because building bridges and caring for cats need time and skill.
Step-by-step explanation:
You would want to divide 30 by 2/3 so you would do 30/1 times 3/2. This method is known as keep change flip or kcf (Kentucky Chicken Fried is what some people say) your final answer should come out to 90/2 which simplified is 45. Hope this helped
It’s A. Have a good day. HALVES:/