The cost($C) of painiting a piece of square wood varies directly as the square of the length (s cm) of each side.If the cost of painitng a piece of square wood of side 5cm is $10, Express C in terms of s.
Plx show it step by step clearly
Maths variation -10poins
2007-03-04 4:26 am
回答 (1)
2007-03-04 4:30 am
✔ 最佳答案
C = ks^2 , k <> (not equal to) 0Put C=10 and s=5,
10 = k(5)^2
k = 10/25
So, C = (10/25) x s^2
收錄日期: 2021-04-12 23:47:32
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