Question

The wheel of a bicycle has a diameter of 70 cm.

What is the circumference of the wheel?

Answer 1

Step-by-step explanation:

DIAMETER = 70CM

RADIUS = 75/2 CM

RADIUS = 35 CM

$circumference = 2\pi \times r \\ 2 \times \frac{22}{7} \times 35cm \\ 220cm$

Answer 2

Given,

The wheel of a bicycle has a diameter of 70 cm.

To Find,

The circumference of the wheel =?

Solution,

We can solve the question as follows:

It is given that the wheel of a bicycle has a diameter of 70 cm. WE have to find the circumference of the wheel.

$Diameter\: of\: the\: wheel = 70\: cm$

The formula for the circumference of a circle is given as:

$Circumference = 2\pi r$

Where $r = Radius\: of\: the\: circle$

Now, we will find the radius of the wheel. The radius is equal to half the diameter. Therefore,

$Radius = \frac{Diameter}{2}$

$Radius = \frac{70}{2} = 35\: cm$

Substituting r = 35 cm and pi = 22/7 in the above formula,

$Circumference = 2*\frac{22}{7} *35$

                          $= 2*22*5$

                          $= 220\: cm$

Hence, the circumference of the circle is equal to 220 cm.