Hello, there!
If s = 9, then 2s = 2 * 9
2 * 9 = 18
2s = 18
I hope I helped!
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~ Zoe
Let X represent the length of the chord.
By using Pythagoras' Theorem:
4^2 + (X/2)^2 = 15^2
(X^2)/4 = 209
X^2 = 836
X = 28.91
If you add it will be 807,683.5
if you multiply it will be 1.82083248E+25
if you divide it will be 1.98800285E−15
if she bought 4 for 1$ and sells 2 for 1$ that means she sells 4 for 2$ so every 4 she buys she makes 1$ so in order to make 5$ their must be 5 x 4bars so 20bars must be bought
Answer: The answer is 153.86 meters squared.