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Please help me find the volume of x for number two

Please help me find the volume of x for number two-example-1
User Dvelopp
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\begin{gathered} cos36=\text{ }(x)/(10) \\ x=10(cos36) \\ x=10(0.81) \\ x\approx8.1 \end{gathered}

8.1

Remember cos = adjacent side (in this case X) / hypotenuse (10)

User Whusterj
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