document.write( "Question 1089307: I am in MAT 104. I've never had algebra. I just started circles and I think Im missing a step in the formula. I've tried several problems and they are all wrong. To get the area I am using A=nr(exponent) 2 don't know how to make the 2 in the air. one of the problems is n=3.14 r= 8ft I multiplied 3.14x8 to the second I got the area is 200.96. To get circumfrence I used 2nr formula so I multiplied 2x3.14x8 =50.24. I got it wrong. Am I missing a step? Or leaving a step out? \n" ); document.write( "

Algebra.Com's Answer #703682 by KMST(5328) $\"\"$ $\"About$

You can put this solution on YOUR website!
The constant $\"pi\"$ (pronounced pie as in apple pie)
\n" ); document.write( "is not exactly 3.14.
\n" ); document.write( "It has an infinite number of decimal places.
\n" ); document.write( "My computer would display it as 3.14159265358979,
\n" ); document.write( "and probably all those digits are correct, but there are more.
\n" ); document.write( "The only absolutely correct answers would be
\n" ); document.write( " $\"64pi\"$ for the area of the circle and $\"16pi\"$ for the circumference.
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\n" ); document.write( "Maybe the instructions for your assignment say to write an approximate result, correct to a certain number of decimal places, and your results, based on $\"pi=3.14\"$ , are not accurate enough.
\n" ); document.write( "If you use a calculator with a symbol for $\"pi\"$ ,
\n" ); document.write( "your results, rounded to 2 decimal places, would be
\n" ); document.write( "201.06 and 50.27.
\n" ); document.write( "My computer calculates 201.061929829747 and 50.2265482455.
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\n" ); document.write( "It could also be the computer expects your answer rounded differently,
\n" ); document.write( "or that it expects the units in the answers,
\n" ); document.write( "or that it expects the answers written as \"64pi\" and \"16pi\".
\n" ); document.write( "With computerized school work, it is more important 5than ever to follow instructions on how to write the answer,
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\n" ); document.write( "NOTES:
\n" ); document.write( "You can write the formulas for circle area and circumference as
\n" ); document.write( "pi*r^2 and 2pi*r, and people used to writing formulas into computers would understand.
\n" ); document.write( "Asterisk is a symbol for multiplication, and the ^ symbol means that what follows is an exponent or superscript and would be written higher if using pencil and paper.
\n" ); document.write( "If this explanation does not help, you can ask me for further explanation by entering a private thank you message to me. Then I could email an answer to the email address you used to register, which will not be given to anyone else. \n" ); document.write( "

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