The area of most three-dimensional geometric shapes is
A = a · h
Area = area of the base · height of the figure.
In this case, the area of the base is the area of a circle, so a = πr²:
a = 10²π
a = 100π ≅ 314
Now, all we have to do is multiply the area of the base to the height:
A = 100π · 6
A = 600π ← In terms of "π"
A ≅ 1884 ← Rounded answer