Please help me and explain how you got the answer (don't guess on the questions if you don't know it don't answer)

Please help me and explain how you got the answer dont guess on the questions if you dont know it dont answer class=

Respuesta :

area of a circle = (π[tex] \pi [/tex])*radius squared
so 8.1 squared = 65.61, now multiply by [tex] \pi [/tex] (3.14)
the answer is 206.12cm squared.
Which one is closest?