Answer:
use formula
area =1/4*π*d^2
81π=1/4*π*d^2(here two pie gets cancel)
81=1/4*d^2
81*4=d^2
=d
18=d
Step-by-step explanation:
The answer is (a) 2x^4 y^8
I bet the ODE is supposed to read

Then if
, we have
and
, and substituting these into the ODE gives

Solving for <em>r</em>, we find

so that
and
are two fundamental solutions to the ODE. Thus the general solution is

Given that
and
, we get

So the particular solution is

Answer:
80% or like 8 squares out of 10 oe=r 4 out of 5 ect
Step-by-step explanation: