Cosθ = adjacent / hypotenuse

I hope I helped you^_^
Answer:

Step-by-step explanation:
<em>Set the problem up as a proportion</em>
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<em>cross multiply</em>
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<em>divide both sides by 30</em>
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<em>plz mark me brainliest. :)</em>
I think that it gets smaller. (not entirely sure)
volume is 180
surface area (area) is 105.97