Question

If the circumference of a circular roller skating rink is 36 yards, what is the diameter of the rink (to the nearest whole yard) ? Use 3.14 for pi

Answer 1

To work out circumference you use:
$2 \pi r$

Do get diameter from the circumference, you divide the circumference by pi:

36 / 3.14 = 11.5, or rounded to 12.

So the answer is 12 yards.

Hope this helps!

Answer 2

Answer:

11 yards

Option 3 is correct.

Step-by-step explanation:

The circumference of a circular roller skating rink is 36 yards.

Formula:

$C=\pi d$

where, C is circumference and d is diameter.

$\pi=3.14$

C=36

d=?

$36=3.14\times d$

$d=\dfrac{36}{3.14}\approx 11.46$

$d=11\text{ yards}$

Hence, The diameter of circular track is 11 yards