Question

circumference is 37.68 inches. What is the circle's radius?

Answer 1

The answer should be 6 inches. :)

r = $\frac{c}{2\pi}$

so

r = $\frac{37.68}{2\pi}$

Answer:  r = 6 inches

Answer 2

The circumference of the circle is the perimeter of the circle. The radius of the circle whose perimeter is 37.68inches is 6 inches.

What is circumference?

The circumference of the circle is the perimeter of the circle. It is the length of its boundary. It is given by the formula,

$\text{Circumference of the circle} = 2\pi r$

where r is the radius of the circle.

As it is given that the circumference of the circle is 37.68 inches, therefore, the radius of the triangle can be given as,

$\text{Circumference of the circle} = 2\pi r$

Substituting the values, we will get,

$2\pi r = 37.68\\\\r = \dfrac{37.68}{2 \pi}\\\\r = 5.9945 \approx 6$

Hence, the radius of the circle whose perimeter is 37.68inches is 6 inches.

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