Given that,
Radius of the circle, r = 8.91 cm
Angle, 
To find,
The area of minor sector.
Solution,
The formula for the area of minor sector is given by the formula as follows :

So, the area of the shaded sector is
.
Three variable terms appear in this expression. Although 9xy has two variables, they combine to make one term.
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She made 15 cookies
<em><u>Solution:</u></em>
Let "x" be the number of cookies she made
She gave 1/3 of cookies for her husband
Therefore,

Find the remaining

1/4 of the cookies to her son
Therefore,

Now again find the remaining

1/6 of a cookies to her neighbor

Now again find the remaining

She ate the remaining six cookies
Therefore,

Thus she made approximately 15 cookies