Answer:
The answer is C
Sn=3(1-1/2^n)
Step-by-step explanation:
Answer:
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The formula for circumference of a circle
=
2
π
r
The radius
=
3
c
m
(assuming units to be in cm)
2
π
r
=
2
×
22
7
×
3
=
132
7
=
18.86
c
m
28 x 2 = 56 half dollar coins
3x-12 is simplified from parenthesis
