document.write( "Question 1160876: find the area of a circle with diameter 14cm.use the value 3.14 for pie and do not round your answer be sure to include the correct unit in your answer \n" ); document.write( "
Algebra.Com's Answer #784279 by solver91311(24713)![]() ![]() You can put this solution on YOUR website! \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The area of a circle is found by squaring the radius and multiplying by \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "You were given the diameter, 14 cm, so you need to first compute the radius which is precisely one-half of the diameter, namely 7 cm.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So, 7 cm squared is 49 multiplied by the required approximation for \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "However, for the question as stated, this answer is absolutely and demonstrably wrong. Here is why: ALL measurements are approximations. You were given 14 cm as a measure of the diameter. But since you were given the approximate measurement to the nearest whole centimeter, you are only guaranteed that the true measurement is in the interval \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Which renders the decimal fraction on the requested answer utterly meaningless. If your instructor had wanted an answer correct to two decimal places s/he should have expressed the original diameter measurement as 14.00 centimeters.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Rule: Never express the FINAL result of a calculation involving measurements to greater precision than the least precise given measurement. \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "John \n" ); document.write( " \n" ); document.write( "My calculator said it, I believe it, that settles it \n" ); document.write( " ![]() \n" ); document.write( " |