Answer:
Step-by-step explanation:
Alright, lets get started.
There is a composite figure given with two semi spheres and one cylinder attached.
So the volumes of two semi spheres will form a volume of complete sphere.
So, the volume of sphere = [tex]\frac{4}{3}\pi r^{3}[/tex]
The radius is half of 20 means 10, so volume of sphere = [tex]\frac{4}{3}\pi (10)^{3}[/tex]
Now the volume of cylinder = [tex]\pi r^2h[/tex]
Volume of cylinder = [tex]\pi (10)^2(28)[/tex]
So, the volume of composite figure = [tex]\frac{4}{3}\pi(10)^3 + \pi(10)^2(28)[/tex] ........... Answer
Hope it will help :)
