Question

Find the radius of a circle with the given circumference. 15π ft. r = 30 ft. 30 ft. 7.5 ft. 7.5 ft.

Answer 1

Given

$circumference = 15 \: \pi \: ft$
Circumference of circle =
$2\pi \: r$

$2\pi \: r = 15\pi$
$r = \frac{15 \times \pi}{2 \times \pi}$
R=
$\frac{15}{2}$
R=7.5 ft.

Answer 2

Hello!

*** Note: Your question was poorly worked out, I decided to help you and I asked your question more comprehensively!

Find the radius of a circle with the given circumference of 15 πft.

r = ? 30 ft.  7.5 ft.

Solving: Using the data

C (circumference lenght) = 15 π ft

r (radius) = ?

Formula:

$\boxed{C = 2* \pi *r}$

Now, replace in the circumference length formula:

$C = 2\:\pi *r$

$r = \dfrac{C}{2\pi}$

$r = \dfrac{15\:\diagup\!\!\!\!\pi\:ft }{2\:\diagup\!\!\!\!\pi}$

$\boxed{\boxed{r = 7.5\:ft}}\end{array}}\qquad\checkmark$

Answer:

7.5 ft

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I Hope this helps, greetings ... Dexteright02! =)