Tia's aunt gave her some money to buy whatever she wanted over the Spring Break. She got an additional $30 from her grandmother. Tia spent half of her money on a pair of the Jordan 5 "Raging Bulls". How much money does Tia have left ?

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Cylinder Surface Area = (2 • π • r²) + (2 • π • r • height)

Cylinder Surface Area = 2 * PI * 12^2 + 2 * PI * 12 * 16

Cylinder Surface Area = 904.7786842339 +  1,206.3715789785
Cylinder Surface Area = 2,111.1502632124 square feet
Which equals
672 PI square feet

The answer is second from the top.
Source:
http://www.1728.org/diamform.htm