21. Find the volumes of the following figures: a. 8cm 11cm b. C. 13" 144cm 999 15cm 5cm

Q: 3y=45

A: Given information:

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A: First three parts are as solved before.

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A:

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A:

Q: Hi the solution is in

A: Given claim: Test whether the true mean age of the store's shoppers is over 21. Null Hypothesis:…