Question

Please help ASAP THANKS x

Answer 1

The formula of the volume of the sphere:
$V=\dfrac{4}{3}\pi r^3$
We have a diameter. It's equal double radius.
Therefore
$2r=9\dfrac{1}{2}\\\\2r=9.5\ \ \ |:2\\\\r=4.75\ in.$

$V=\dfrac{4}{3}\pi\cdot(4.75)^3\approx449\ in^3.$
Answer: D. 449 cubic inches.