# What is the circumference with a radius of 5?

**circumference**of a circle is 2πr so all we have to do is plug in

**5**for our

**radius**: 2π(

**5**) which can be simplified to 10π .

Similarly, you may ask, what is the circumference of 5?

Assuming the circle diameter is equal to **5** ft, then the circle **circumference** is equal to pi×diameter or 3.14159×**5** ft = 15.70795 ft or approximately 15.7 ft.

Subsequently, question is, what is the circumference of the radius is 7? Since the diameter d is equal to 2 times the **radius** r , the formula for **circumference** using **radius** is 2πr 2 π r . Substitute the value of the **radius** (r=**7**cm) ( r = **7** c m ) into the formula for the area of a circle. Pi π is approximately equal to 3.14 .

Also asked, what is the radius If the circumference is?

A circle's **circumference is** always twice that **of** its **radius**. Substitute **radius** for diameter in the equation Pi = c/d. The equation Pi = c/2r means that Pi (r) = c/2, so r = c / (2 Pi). The **radius of** a circle is therefore equal to c / (2 Pi) where c is the **circumference of** the circle.

What is the formula for circumference?

The circumference = π x the diameter of the **circle** (Pi multiplied by the diameter of the **circle**). Simply divide the circumference by π and you will have the length of the diameter. The diameter is just the radius times two, so divide the diameter by two and you will have the radius of the **circle**!