Adecorator table has a diameter of 50 cm and height of 66 cm. its circular cover hangs to the floor all around. what is the area of the cover?

answer this the best you can, a lot!

This is a surface-area-of-a-cylinder problem.

First, we need to determine some basic facts about the table's top. Its area is equal to , where r is the radius, or the diameter divided by 2.  We have a diameter of 50 cm, so the radius is 25 cm.  Solving the circle area equation, we get 1963.50 cm (that's square centimeters, if my theoretically clever formatting turns out to be a failure).  Also note that I rounded to 2 decimal places, which seems to be the common practice.

Now, the circumference of the tabletop.  The equation is ; our circle's circumference is about equal to 157.08.

And that's all the information we need to calculate the total surface area:

(66*157.08) + 1963.50 = 12330.78 square centimeters, which is our answer.

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