Answer:
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Explanation
Question 1: Volume of a cycliner is V=πr2h
the radius of the first cyclinder is 5 and the height is 12
V= (π)(5^2)(12)
=942.4777961
=nearest thousandth = 942.478 km3 (km cubed)
Question 2:Volume of a cycliner is V=πr2h
radius=11
height=7
V=(π)(11^2)(7)
=2660.928978
=nearest thousandth= 2660.929 mi3 (miles cubed)