Answer:
A≈12.57
Step-by-step explanation:
Using the formulas
A=πr2
d=2r
Solving for A
A=1
4πd2=1
4·π·42≈12.56637
392 I got that correct as well
.01
There are 3600'' in 1°. 36"/3600"= .01°
z=5
Trust me I don't know how to explain it.
