Question

Find the radius of a circle whose circumference ​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

Step-by-step explanation:

a.15.4cm

circumference = 15.4cm = $2\pi r$

15.4 cm × 7/(22 ×2) = r

radius = 2.45 cm

b. 3.14 cm

circumference = 3.14cm = $2\pi r$

13.4 cm × 7/(22 ×2) = r

radius = 0.cm

c.  4.4cm

circumference = 4.4cm = $2\pi r$

4.4 cm × 7/(22 ×2) = r

radius = 0.7cm

d.2.2 cm

circumference = 4.4cm = $2\pi r$

2.2 cm × 7/(22 ×2) = r

radius = 0.35cm

e.  15.7 cm

circumference = 15.7cm = $2\pi r$

15.7 cm × 7/(22 ×2) = r

radius =2.4977 cm

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