小六數學！急！急 (圖周)

2007-04-04 11:02 pm

教具滾輪的直徑是32cm,志良用滾輪來量度籃球場的長度．結果滾輪剛好轉動了25圈．問籃球場的長度是多少米?　

回答 (5)

2007-04-05 1:47 am

32x3.14x25/100

=100.48x25/100

=2512/100

=25.12 m

參考: ne

👍 0 👎 0

2007-04-04 11:43 pm

(32x3.14x25)x100

2007-04-04 15:45:44 補充：
trust me ,i have learn it very soon

參考: my school

👍 0 👎 0

2007-04-04 11:20 pm

籃球場的長度=直徑 x π x 圈數
=32/100 x π x 25
=25.132741228718345907701147066236 m
=25.1 m (準確至3位有效數字)

參考: me

👍 0 👎 0

2007-04-04 11:07 pm

32cm x 3.14 =100.48cm

100.48cm =1.0048m

thanks

👍 0 👎 0

2007-04-04 11:07 pm

籃球場的長度是:
32*25
=800(cm)
800/100
=8(m)

👍 0 👎 0