Step-by-step explanation:
1a. Just add both of them.

1b. We just subtract both of the functions.


1c.


1d.

Multiplying eqn no. two with 4 we add it up with eqn 1.


When


So, x = - 10/17 and y = - 42/17.
Answer:
125.8983
Step-by-step explanation:
Use the formula for volume of a cone: v= (1/3)(3.14)(radius squared)(height) so v = (1/3)(3.14)(20.25)(6) = 125.8983