Which are examples of varibles

usually letters are one of the variables in math (x,y) such as 7+x=10, x+4=10

Step-by-step explanation:

an element, feature, or factor that is liable to vary or change

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !