Does anyone know how to solve 81 increased to 90?

v: l•w•h÷2.

v: 20•6•8 ÷2

v: 960÷2

v: 480

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 !