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Question 1:

A 21.3 cm diameter hole is drilled in a cube with 48.4 cm long sides as shown here (sketch is not to scale). Determine the total surface area of this shape in square centimeters.

Express your answer to three significant digits.

Reference Pic:

http://img404.imageshack.us/img404/9702/84313854.png
Question 2:

A tank used to transport liquids is made up of a cylinder with semi-spheres on its ends as shown (drawing not to scale). The length of the cylindrical portion of the tank is 2.2 m and its height is 2.1 m. What is the surface area of the outside of the tank in square metres?

Reference Pic:

http://img710.imageshack.us/img710/1430/83625107.png
I did the second question and got 49.8. I wanted to know if this was the right answer, if it is not how do i get to the right answer.

thanks in advance