Answer:
25 + 11 hope this helps
Step-by-step explanation:
answer is the third one
40 = 0.5r
40/0.5 = r
80 = r
just divide the number in front of the r so that you can figure it out
Sq root (54) =
sq root (9*5) =
3 * sq root (5)
Remark
I would have had the answer a whole lot sooner if I would have read the question properly. The figure in the circle is called a cyclic quadrilateral. It has the odd property that the angles that are opposite each other add up to 180o.
So DEB + DCB = 180o
DEB = 180 - 87
DEB = 93o
Note: The arcs marked 60 and 76 have nothing whatever to do with this problem.
