Question

What is the circumference of the circle shown in the coordinate plane? Use = 3.14.
A.
9.42 units
B.
28.26 units
C.
18.84 units
D.
37.68 units

Answer 1

(1.) c=2πr

9.42=2×3.14×r

r=9.42/(2×3.14)

r=942/(2×314)

r=1.5 units

(2.) c=2πr

28.26=2×3.14×r

r=28.26/(2×3.14)

r=2826/(2×314)

r=4.5 units

(3.) c=2πr

18.84=2×3.14×r

r=18.84/(2×3.14)

r=1884/(2×314)

r=3 units

(4.) c=2πr

37.68=2×3.14×r

r=37.68/(2×3.14)

r=3768/(2×314)

r=6 units

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