Answer:
125.6
Step-by-step explanation:
C=2pir
C=2(3.14)(20)=125.6
Answer:
x,y=2
Step-by-step explanation:
Simply, do 18 times 10, or add 18 ten times for the answer.
15)
∠EAD ≅ ∠CAB . . . . . . reflexive property. An angle is congruent with itself.
∠AED ≅ ∠ACB . . . . . . given
ΔABC ≅ ΔADE . . . . . . angle-angle similarity: If two angles are congruent, all three angles are congruent and the triangles are similar.
Rational: Any number that can be expressed as a fraction (or a ratio.)
Irrational: Not rational, any number that can't be written down as a fraction. Some examples include

,

, and so on.