Write, x2 + 8x − 3 = 0 in vertex form using the completing-the-square method. (2 points) a
(x - 8)2 - 11 = 0

b
(x - 8)2 + 19 = 0

c
(x - 4)2 + 11 = 0

d
(x + 4)2 - 19 = 0

1 is b and 2 is d

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 !