Answer:
1,3,9
Gcf: 9
Step-by-step explanation:
Euler's formula for a polyhedron is given by:

Make E, the subject of the formula:

Put F = 20, V = 12, to obtain E,

Therefore, there are 30 edges
Answer:
wait 2022?!?!?!!?
Step-by-step explanation:
<span>1017.88 if you use the formula for the area of a circle which is </span>πr²