Find the circumference and the area of a circle with diameter 4cm.
2 answers:
Answer:
13.56cm
Step-by-step explanation:
circumference= π × diameter
c = 3.14 × 4
c = 12.56cm
Circumference is 12.57
Work: C = 2(pi)(r)
C = 2(3.14)(2)
Area is also 12.56
Work: A= pi(r)^2
A = 3.14*2^2
A= 3.14*4
A= 12.57
r was found from dividing the diameter by 2
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