Finding Area of Shaded Region - Thomas' Calculus P. 385 #39

Hello everyone,

Could someone please check my work to see where I've erred? My answer is slightly below the one given by my textbook.

Thank you!

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39. Find the total areas of the shaded region in:

http://img23.imageshack.us/img23/359...lusp38539h.png------

My work:

I found the area separately, from left to right.

Shaded part on left =

Shaded part in middle =

Shaded part on right =

Therefore, total area = [tex] \frac{47}{6} [\math]. According to textbook, total area = 49/6 (hidden in white).