Answer:
b=12
Step-by-step explanation:
<span>3a^2+12a = 3a(a+4)
...</span>
Circumference of a circle = 2πr
C = 2π(4)
C = 8π
C = 8 * 3.14 = 25.12
In short, Your Answer would be 25.12
Hope this helps!
Arthur must earn $53 in the next week
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