Answer:
10
Step-by-step explanation:
circumference=πD
R=10
D=20
3.14*20
=68.2
x<1
inverse
t³-t²-2t/t -5 )/(t²-t-2)
(t^4-t^3-7t)/t^3-t^2-2t)
(t³-t²-7)/(t²-t-2)
I hope that's help !
