Try        .20 x 39.99 = and you'll get your answer.

Or if you want to be accurate.......it would be 5,280 feet. Not everyones feet are the same. Big6 could have size 4 feet and PANDA could have size 10 feet.

Actualy its said as dense. This is also a good example of an unfinished sentence and bad english skills. But if your from somewhere else and is trying to work on your english, keep it up.

Also...Are you trying to say "What is dense?" or "Which is dense?" but didnt finish?

Ohhh this is an easy one. Any number that dosent have decimals or fractions. good example = 0,1,2,3,4,250, 300, 957,1563.       Bad examples are = 12.34 , 2 1/2 , 3.14 or pi , 7854.256

Umbriel has it allllll correct. I remember doing this in middle school. Very easy. You dont even need a calculator.

Idk...find the diameter and the height and you'll have the answer.HAHA

To get a simply typical answer its 3.14 but you can get exact.

I was just about to say what facebook said but there is no use in saying it twice...once said its said. But that is really good advice to pass on. I very well agree with you. 

Unless your wanting to try to find the degree of the top vertex. But that also depends on what type of triangle it is. Its could be an equalateral, scalene or isosilies. In the end though......the " triangle angles " WILL add up to 180 degrees. ---->      side #1                side #1                  side #3

                                                                         --------------------      --------------------     -------------------

                                  TOTAL DEGREES : 180 DEGREES

And the diagonal point where they both meet is called a vertex.