如题所述
æ±ä¸ååå¾ä¸é´å½±é¨åçå¨é¿åé¢ç§¯ 50
å¨é¿3.14Ã4+3.14Ã4+4Ã2
=12.56+12.56+8
=33.56ï¼åç±³ï¼
é¢ç§¯3.14Ã4²Ã1/2-3.14Ãï¼4/2ï¼²
=3.14Ã8-3.14Ã4
=3.14Ã4
=12.56ï¼å¹³æ¹åç±³ï¼