Question

A lamp shade has a radius of 9 inches. What is the circumference of the top of the shade? Use 3.14 to approximate pi. Round your answer to the nearest whole number.

Answer 1

The circumference of the lamp shade is 57 inches.

Explanation:

Given : A lamp shade has a radius of 9 inches.

To find : The circumference of the top of the shade

Solution : A lamp shade is in a sphere form,

So, formula to find the circumference of sphere is

`C=2\pi r`

Now, the radius of lamp is 9 inches and
`\pi=3.14`

Substitute the value in the formula we get,

`C=2\pi r`

`C=2* 3.14 * 9`

`C=56.52`

Round to nearest whole number circumference is 57 .

Therefore,The circumference of the lamp shade is 57 inches.