Respuesta :

Answer:

[tex]5\:\mathrm{cm}[/tex]

Step-by-step explanation:

The circumference of a circle is given by [tex]C=2\pi r[/tex], where [tex]r[/tex] is the radius of the circle.

What we're given:

  • [tex]C[/tex] of 31.4

Solving for [tex]r[/tex]:

[tex]31.4=2\cdot 3.14 \cdot r,\\r=\frac{31.4}{2\cdot 3.14}=\boxed{5}[/tex]

Answer:

Radius of circle is 5 cm.

Step-by-step explanation:

Given that

  • Circumference of circle = 31.4 cm
  • Using value of π = 3.14

To Find :-

Radius of circle

Formula Used

Circumference of circle = 2 × π × r

Solution :-

Using Formula

Circumference of circle = 2 × π × r

Substitute the values into the formula

31.4 cm = 2 × 3.14 × r

multiply

31.4 cm = 6.28 × r

Divide , we get

31.4 cm /6.28 = r

5 cm = r

Hence, Radius of circle is 5 cm.