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Bunuel
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As the length of both QT and TR are equal. So we can deduce that the length of the side of the Square is 6 and radius of the circle is 3. From this we can find the areas of the square and the Circle and add both.
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Side of Square = QT+TR =3+3 =6
radius = 3
Area Square = 6*6 =36
Area of 3/4 Circle = 3/4 * pie *3*3= pi*27/4
Total area 36+ pi*27/4, Answer = C
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Bunuel

In the figure above, vertex R of square PQRS is the center of the circle. If QT = TR = 3, what is the area of the shaded region?

(A) 9 + 27π/4
(B) 9 + 27π
(C) 36 + 27π/4
(D) 36 + 9π
(E) 36 + 27π


Attachment:
2017-11-17_0948.png

We can consider the shaded region as the total area of a square and ¾ the area of a circle.

Since TR = 3, the radius of the circle is 3 and the side of the square is 6.

Thus:

Area of the square is 6 x 6 = 36.

3/4 of the area of the circle is 3/4 x π x 3^2 = 27π/4.

So, the area of the shaded region is 36 + 27π/4.

Answer: C
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