Answer:
(b) Radius of the sphere = 5 units.
Explanation:
Here, given:
The volume of the sphere =
cubic units ... (1)
Also, radius of the sphere = x units
Now, VOLUME OF SPHERE =
![((4)/(3)) \pi r^3](https://img.qammunity.org/2021/formulas/mathematics/middle-school/iowh5k93441ha7fhiucgkkwskn8vzfz97q.png)
So, volume of a sphere with radius x =
![((4)/(3)) \pi (x)^3](https://img.qammunity.org/2021/formulas/mathematics/middle-school/kn1bo2ft6r7yw4cbslmqm0kefsayvcr91n.png)
But volume of sphere is given by (1).
![\implies ((500)/(3))\pi = ((4)/(3)) \pi (x)^3\\\implies ((500)/(3)) = ((4)/(3)) (x)^3\\\implies x^3 = ((500)/(3)) * ((3)/(4)) = 125\\\implies x^ 3 = 125 = (5)^3\\\implies x = 5](https://img.qammunity.org/2021/formulas/mathematics/middle-school/zibgwa17ia13bn1i5xjmkev70fgm77wnsw.png)
Hence, radius of the sphere = 5 units.