Question

use a = 3.14 to find the circumference if each circle.​

Answer 1

Answer:

circumference of circle= (2×3.14×2)km=12.56km

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Answer 2

Step-by-step explanation:

Radius=2km = 2×1000= 2000m

$circumference \: of \: circle \: = 2\pi r.$

$\: \: \: \: \: \: \: \: = 2\pi \times 2000 \\ \: \: \: \: \: \: \: \: \: \: \: \: = 4000 \times 3.14 \\ = 12560 \: metre \: \: units.$ or 12.56 km