Answer:
56.55km^3
and
6385.03in^3
Explanation:
The volume of a sphere is:
Vol = 4/3•pi•r^3
We're going to do 1/2 of that for the hemisphere shape you have in these questions.
Vol = 1/2•4/3•pi•r^3
= 4/6•pi•3^3
= 2/3•pi•27
= 18pi
~= 56.54866776
~= 56.55km^3
One more time for #6.
Vol = 1/2•4/3pi•r^3
= 4/6pi(29/2)^3
= 2/3pi(29/2)^3
not as much stuff cancelling, so we just toss it all into the calculator.
~= 6385.025269033
~= 6385.03in^3