Question

Find the diameter of a circle whose circumference is 22 cm​

Answer 1

Answer:

7

Step-by-step explanation:

Answer 2

The diameter of the circle is 7 cm

Given

Circumference of the circle = 22 cm

To Find

The diameter of the circle

Solution

The equation for calculating the circumference of a circle is given by

$C=2\pi r$ where,

$C$ is the circumference = 22 cm

$\pi$ is a constant equal to 3.14

$r$ is the radius of the circle

Substituting given values to the above equation we get

$22 = 2\pi r$

$2r=\frac{22}{\pi }$

$2r = \frac{22}{3.14}$

$2r = 7$

Now we know that the diameter of a circle is twice its radius ($2r$) and from above statement $2r = 7$ cm

Hence the diameter of the circle is 7 cm