8-4=4
4-(3/4)= 3.25 or 3 1/4
Answer:
y²=4√2.x
Step-by-step explanation:
The focus is at (0,4) and directrix is y=x or x-y =0, for a parabola P.
The distance between the focus and the directrix of the parabola P is
=
{Since the perpendicular distance of a point (x1, y1) from the straight line ax+by+c =0 is given by
}
Let us assume that the equation of the parabola which is congruent with parabola P is y²=4ax
{Since the parabola has vertical directrix}
Hence, the distance between focus and the directrix is 2a =
, {Two parabolas are congruent when the distances between their focus and the directrix are same}
⇒ a=√2
Therefore, the equation of the parabola is y²=4√2.x (Answer)
The answer is 4 if I am correct
Volume of a cone = (PI * radius^2 * height) / 3
Volume of a cone = (PI * 3^2 * 8) / 3
Volume of a cone = (PI * 24)
Cylinder Volume = PI • r² • height
Cylinder Volume = PI * 3^3 * 12
Cylinder Volume = PI * 108
TOTAL Volume = PI * 132
691/100 and 6 whole, 91/100 :)