唔該你地幫幫手,,,我要一條完整既式...有步驟既....thx~
更新1:
有個半圓形,,,正中間有個正方形,,邊長6cm,,,求個半圓形既半徑....
中二數學題一條...急急急
2008-04-19 9:26 pm
ABCD is a semi-circle and BCYX is a square of sides 6 cm.Fimd the radius of the semi-circle.
唔該你地幫幫手,,,我要一條完整既式...有步驟既....thx~
唔該你地幫幫手,,,我要一條完整既式...有步驟既....thx~
回答 (4)
2008-04-19 11:46 pm
✔ 最佳答案
radius is the line drawn from the middle point of a side of the square to the opposite angle, it will form a right-angled triangle.Therefore, the formula applied:
r^2 = 6^2 + 3^2
r^2 = 36 + 9
r^ = 42
r =6.48cm
參考: me
2008-04-19 10:55 pm
a square of sides is 6 cm, so the radius is 6x2=12cm
2008-04-19 14:57:19 補充：
希望沒有誤會你的意思!
2008-04-19 14:57:19 補充：
希望沒有誤會你的意思!
參考: myself
2008-04-19 9:32 pm
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2008-04-19 9:29 pm
ABCD is a semi-circle and BCYX is a square of sides 6 cm.Fimd the radius of the semi-circle
你有個英文字都打錯= =
唔明你up咩
又冇圖
你有個英文字都打錯= =
唔明你up咩
又冇圖
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