If line AB is parallel to line CD, and line CD is perpendicular to line EF, AB is perpendicular to line EF due to the perpendicular transversal theorem<span>,which says, if a line is perpendicular to another line, then it is perpendicular to the line parallel to the second line.
This theorem can be proved through the transversal postulate and theorems.</span>
Answer:
18.3
Step-by-step explanation:

![[tex]π[tex]πr[tex]πr2[tex]πr2 = 12.57](https://tex.z-dn.net/?f=%3C%2Fstrong%3E%3C%2Fp%3E%3Cp%3E%3C%2Fp%3E%3Cp%3E%3Cstrong%3E%5Btex%5D%CF%80%3C%2Fstrong%3E%3C%2Fp%3E%3Cp%3E%3C%2Fp%3E%3Cp%3E%3Cstrong%3E%5Btex%5D%CF%80r%3C%2Fstrong%3E%3C%2Fp%3E%3Cp%3E%3C%2Fp%3E%3Cp%3E%3Cstrong%3E%5Btex%5D%CF%80r2%3C%2Fstrong%3E%3C%2Fp%3E%3Cp%3E%3C%2Fp%3E%3Cp%3E%3Cstrong%3E%5Btex%5D%CF%80r2%20%3D%2012.57)


Answer:
The function given is non-linear.
Step-by-step explanation:
The slope between (0, 2) and (2,6):

The slope between (2,6), and (3, 12):

Since the slopes are not equal to each other, the function is non-linear. A linear function's slope must stay consistent.
Hope this helps.
Answer:
2
Step-by-step explanation:
it may not be right because i guessed
Answer:
/\------------------------------\
a / \ \
/ \ \ (Im not an artist....)
/_____ \________________\
b c
(A x B / 2) + (A x B / 2) + (A x C) + (A x C) + ( B x C) + (B x C)
Step-by-step explanation: