Respuesta :

ktreyb
The formula for the circumference of a circle is C = 2[tex] \pi [/tex]r

So we just plug in the given information and work backwards.

340 = 2[tex] \pi [/tex]r. 

Divide by 2[tex] \pi [/tex] to isolate the variable r. 

r = 340 / 2[tex] \pi [/tex] 

radius = 170[tex] \pi [/tex] or the radius is ≈ 534.071 cm. 

penfila11Pen
Hey there :)

We know the formula of the circumference of a circle:
Circumference = 2[tex] \pi [/tex] × radius

We are given;
The circumference = 340 cm

Apply the formula
340 = 2[tex] \pi [/tex] r

Divide by 2[tex] \pi [/tex] on either side
[tex] \frac{340}{2 \pi } = \frac{2 \pi r}{2 \pi } [/tex]
[tex] \frac{170}{ \pi } = r[/tex]

r ≈ 54.1 cm → Your answer

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