I believe it's A. Hope it helps :)
The vern diagram? can u send a picture of the options?
Congruent angles of what... be more specific please..
It’s a right angle. it follows the circle theorem ‘the angle in a semi-circle is 90 degrees’
You would do 69sq×3.1416. that gives you 14,957.1576 round it to the nearest hundreth, 14,957.16