C=2pir
pi=3.14
r=18
c=(2)(3.14)(18)
c=(6.28)(18)
c=113.04
D is answer
Answer:
I think it would be 24
f
+
14
g
three, twelve, five, and six
If О is the center of a circle then:
<span>
OA = OB = OC = OD [radii]
AB = AH + HB = 15 + 15 = 30 </span>⇒ AB = CD
<span>
So </span>ΔAOB ≅ ΔCOD [SSS rule] ⇒ x = OH = 16 units.