Answer:
d=4.14
Step-by-step explanation:
use the equation d=2r
d=C/π=13/π≈4.13803
4.13803≈4.14
It should be like $112
$80 times 40% is $32.
Since it is marked up, you add 80 more to 32.
80 + 32 = x
112 = x
$12.99
$38.97/3
yes
yes you can