Acircle has an area of 4040 square meters. which answer is closest to the measure of its diameter?

clear check

a 1.8 meters

b 3.6 meters

c 4 meters

d 7.1meters

Well the answer I got was closest to 71.

3.14 x radius squared = area

If you divide 4040 by 3.14 you get radius squared which is 1286.6242
If you square root it you get the radius which is 35.869544
If you multiply the radius by 2 you get diameter which is about 71.739088

The answer is why would a teacher ask that