Solution:
We know that:
Step-1: Find the radius:
Step-2: Find the area of the circle:
[tex]\\ \rm\Rrightarrow Area=\pi r^2[/tex]
[tex]\\ \rm\Rrightarrow Area=(3.14)11^2[/tex]
[tex]\\ \rm\Rrightarrow Area=121(3.14)[/tex]
[tex]\\ \rm\Rrightarrow Area=379.9mm^2[/tex]