Please help! Which of the following points is located in Quadrant IV?
(-5,2)
(4,3)
(1, -4)
(-6, -7)

(1,-4) is in quadrant IV.

Step-by-step explanation:

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 !