Find the equation of the surface. a standard cone with vertex at (7, 0 , 0) opening up on the positive x-axis.

solution:

Since, it’s a standard cone opening up on the positive x – axis therefore,

X = √y²+z²

And because it has a vertex at (7,0,0)

Therefore the equation of surface is  

X = 7 + √y²+z²

3x + 18 = 147°

step-by-step explanation:

3x + 18 = 147°, because the value of the central angle is equal to the value of the arc formed by it.

i hope i you.