Find the length of the missing side of necessary round to the nearest tenth

The answer is 22.36

Step-by-step explanation:

1. You do 20^2 +10^2 =c^2

20^2 is 400 and 10^2 is 100 so 400+100 is 500 then you square root it and you get 22.36

(a) the volume of the cone is 20/3 in3

hence, option a is correct.

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