Question

Find the circumference of a circle with diameter,

Answer 1

Given:

Diameter of circle = 7.18 m

To find:

Circumference of the circle

Steps:

We know that radius is equal to half of the diameter

r = d/2

r = 7.18/2

r = 3.59 m

Now circumference is equal 2πr

Circumference = 2πr

Circumference = 2 × 3.14 × 3.59      (taking pi as 3.14)

Circumference = 6.28 × 3.59

Circumference = 22.5452

Circumference ≈ 22.55 meters

Therefore, the circumference of the circle is approximately 22.55 meters

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Answer 2

Answer:

C = 22.56

Step-by-step explanation:

The equation for the circumference of a circle is $C=2\pi r$.

The radius is half the diameter so $r=\frac{7.18}{2}=3.59$

Plug the radius into the equation.

$C=2*\pi *3.59$

$C=22.55664$