Answer: I don’t have my calculator on me but I’ll explain
Step by step: the shape is a cone and a sphere so the volume of a sphere is 4/3 πr^3 but because it’s half a sphere, divide by 2 and the volume of a cone is 1/3h πr^2
Sphere= 4/3 π(10)^3 (plug that in ur calculator) then divide by 2
A rational number will either end or repeat forever like the first three, but the fourth one, pi, will go on forever and never repeat, making it irrational.
