Calculate the volume of the cylinder, where a = 18 and b = 11. use 3.14 for pi and round your answer to the nearest tenth.

To get the volume use the formula pi times the radius square times the height

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since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.