Question

The diameter of a bicycle wheel is 20 inches.

Find the circumference of the wheel. Use 3.14 as an approximation for a.

Answer 1

The  circumference of the wheel is 62.8

Given that,

• The diameter of a bicycle wheel is 20 inches.

calculation:

We know that

Circumference is = $2\pi r$

Since diameter is 20 so radius be 10

Now the circumference is

$= 2\times 3.14 \times 10$

= 62.8

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Answer 2

The required circumference is 62.8 inches.

Given diameter is 20 inches

So, the radius of the wheel is,

$r=\frac{d}{2}\\ =\frac{2}{2} \\=10$

Circumference of the circle:

Circumference of the circle or perimeter of the circle is the measurement of the boundary of the circle. Whereas the area of the circle defines the region occupied by it.

And the formula is $C=2 \pi r$ where r is the radius.

Now, substituting the given radius into the above formula we get,

$Circumfrence=2 \pi(10)\\=2\times3.14\times10\\=62.8 inches$

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