Question

Please step-by-step help me how much of a circle is shaded

Answer 1

The given data is ratio from the the total are of circle is 1 .

let the shaded area is x then:

All area is equal to one.

`\begin{gathered} (1)/(2)+(2)/(9)+x=1 \\ (9+4)/(18)+x=1 \\ (13)/(18)+x=1 \\ x=1-(13)/(18) \\ x=(18-13)/(18) \\ x=(5)/(18) \end{gathered}`

So area of shaded region is

`(5)/(18)`